Philips 22CS1002/05t TV
 

https://www.vintage-radio.net/forum/...newthread&f=37

Just returning to this after a while. I SENT it in for a fix with someone else and it's come back a lot better, but with some differences, and questions.

He modded channels 5-7 into video channels, which I'm pleased about, ut there's a noticeable difference, which the native Channel 8 vcr channel ow also has. Previously when using the dedicated vcr channel, there were visible scan linez, as if it was deinterlaced. This is no longer present. Was the previous appearance a fault?

He's. Made some changes to the guns. He said it was unfixable as the tube was dying. He could short something out to get it working, but that would kill it all the more quicker. Nontheless, he got the 40 minute warm up time down to 20 mins, but I'm not overly keen on the change in picture quality. There is now a quite noticeable blue tinge to everything. When watching something in monochrome it's now blue and white, and turning the colour to minimum doesn't make any difference. Previously monochrome was ok unless there was lots of white, at which point it would temporarily tint red.

Any ideas if there's any way to fix this blue tinge and the warm up? Just asking in case anyone has any extra ideas. Thanks.

Re: Philips 22CS1002/05t TV
 

Do you mean this thread ?

https://vintage-radio.net/forum/showthread.php?t=110106

Re: Philips 22CS1002/05t TV
 

Did the RGB cap ever get changed?

ALso, when you say warm up time, do you mean that no picture appears for 20 mins?

Re: Philips 22CS1002/05t TV
 

It very much sounds like he's done his best with a tube that has low emission on one or more guns.
If you want to try setting the greyscale up yourself, refer to the attached image.

Use an appropriate sized flat bladed screwdriver with an insulated handle.

Turn the colour down to zero to give a monochrome picture

The three potentiometers with circles adjust the overall brightness of the corresponding colour. Endeavour to remove any tint in the darkest parts of the picture.

The three pots marked with squares do much the same but affect the highlights to a greater degree, so use them to remove colour tints in the bright parts of the picture.

Maybe you can obtain a result that is subjectively more pleasing, but it sounds like the CRT is well past its best.

Re: Philips 22CS1002/05t TV
 

While shorting out the coil or resistor in the CRT heater circuit permanently will shorten the tube life, it could be worth the gamble to try and heat the tube at 8 to 12V for a few minutes or hook it up to a regenrator. 30AX tubes may respond well to it and you have nothing to lose at this point.

Re: Philips 22CS1002/05t TV
 

It starts black, and then slowly warms up to visible.

But I'm sure the picture quality doesn't look as good, colour tint or not. I'm not quite sure how to describe it really, a bit murkier with a bit on an ntsc to pal video kind of look maybe. Softer. There's definitely problems with the colour that it didn't have before, things often look kind of gaudy. I'm not sure if he changed the rgb caps, he didn't say anything about it.
I'm still a bit unsure as to why the normal and video channels both now look the same.

I also hax some problems with vertical lines on the screen. He used a replacement part that a member here sent me to try and fix it, and that got rid of all but the biggest line, but after using the set for a couple of hours, two other lines have now appeared on screen. Worse than before.

Re: Philips 22CS1002/05t TV
 

The K30 was a great set but was unkind to its tube. The A56-540X was used in many sets of the period, however, and the longevity was mixed. So maybe you can still find a good one in a Sanyo 5133, an Amstrad 2200 or a TX100, as these were kinder to their tubes in my experience. If you can find someone with a BK rejuvenator or similar I've found that they respond quite well. Sounds like your repairer was understandably reluctant to short out the coils on the CRT base but, as Maarten says, you've nothing to lose.
PS Make sure the RGB HT decoupling cap's been changed as Ben says - ISTR it was increased in value from 4.7 to 22uF but I might be wrong on this.

Re: Philips 22CS1002/05t TV
 

I had lots of these sets out on rental because they were so reliable we ran them into the ground . Their swansong was to be used as loan sets often with a heater coil shorted to bring tube emission up.
When the tube got really bad the set was finally scrapped by then both coils had been shorted. it was surprising how long they would carry on like that.
In all that time I never came across a tube that was so bad it took a long time to show a picture.
Unless someone has boosted it to death ?
Is it possible to ask the person that serviced the set what was done? is the tube low emission? did he short a coil or both and did he change the A1 capacitor?

otherwise can you take a few pictures? A picture of the picture as displayed on the screen, a picture of the tube base front and back and a picture of the top of the chassis/pcb around the A! controls component side should answer the questions as to what was done.

If both coils are shorted out and the emission is still poor there is not a lot of hope for the tube, if overrunning the heaters doesn't improve the picture I doubt boosting it will. I always found boosting in line gun tubes was a waste of time. Overrunning the heaters slightly was a much longer term cure. We called it the Heater Modge.
Often a tube's life could be extended for a couple of years in this way.
Rich

Re: Philips 22CS1002/05t TV
 

It may well have 'been boosted to death' actually. The local repair 'expert', who wrote off my ITT v2000 machind after putting it back together wrong came round a couple of years or so ago, when it was taking about 5 minutes to warm hp, and some tinkering in the back, soldering and turning things.
It fixed the warm up problem for a couple of months, then it started to come back and got much worse, now taking about 40 mins to warm up.

I just can't get on with the picture anymore, since the new fix, and i think it's because of the blue nature of the monochrome. I didn't have this problem beflre, the blacks were fine. Having been using it a bit now, i think that the 'monochrome blue' is why it looks so bad. Previously the picture was pretty much fine, once it hax warmed up, other than going red when it had a lot of bright white on screen.

Thanks for the list of compatible tubes. Its a matter of trying to find one. I'm fairly sure I'll need to replace it if possible

Re: Philips 22CS1002/05t TV
 

Yes thanks, and another one after it. I seem to have bodged my original link. They've changed the browser layiut and workings on my phone, and I'm still trying to get to grips with how it works.

Re: Philips 22CS1002/05t TV
 

Graham in post 4 has very helpfully labelled the background controls (uppermost three). It's simply a question of finding an insulated screwdriver to fit, letting the TV warm up, turning the colour down to zero abnd the brightness down a little, then backing off the blue background control a little to get a reasonable monochrome picture - use a mirror. Slightly to the left of the photo are the drive controls which might need a tweak to balance the highlights - increase the brightness control for this.
However it's pretty likely the tube is beyond any help. However - and this is important - check whether the two coils are present on the CRT base, even if they're shorted out. They'll need to be re-instated if you're lucky enough to get a replacement tube. There are two on the CRT base, represented by a curly line, and also two on the main chassis to the left of the LOPT.
Try a wanted post - you never know! A56-540X is the CRT you need.

Re: Philips 22CS1002/05t TV
 

The early 30AX tubes suffered from a very short life. Mullard sorted the problem turning into one of the very best colour tubes of all time.
It's fat neck demanded high scanning currents but the focus was pin sharp.

I hope you can improve your 'grey scale' a bit but it appears your tube is near it's end. If you can get a replacement it takes only minutes to fit with just the grey scale to adjust. I hope you get it sorted. The K30 is an excellent receiver. John.

Re: Philips 22CS1002/05t TV
 

How do I adjust the overscan/geometry myself please? I know there are a few things to turn in the back of the set but am not sure what to do.

Also, how would I be best going about doing a listing looking for a replacement tube? I'm not really sure how best to 'advertise' it given that there are a number of compatible tubes. In relation to that, I know the set has been over-boosted, and that's what's caused it to take so long to warm up. If I do find a replacement tube, do I need to do something inside the set to remove the boost that's been applied so it doesn't affect the new tube?
Thanks :)

Re: Philips 22CS1002/05t TV
 

To answer your questions:
A manual would be helpful to pinpoint the geometry presets - maybe someone has a scan they could attach? If not I should be able to find one for you.
Your tube is an A56-540X. As John says, these were excellent tubes picture-wise, but the early ones died very quickly. Later ones were pretty long lived. Unfortunately there's no easy way of telling which you're getting, though I'm sure Maarten would be able to give you some pointers. As a rule, the ones fitted to later receivers such as the Philips K40 and 2A were good, but as these were good receivers are hard to find. The Amstrad 2200 was a terrible set and so was a good tube donor, but finding one will be a challenge. Thorn TX100s tended to have good tubes, but the TX10 didn't. I'd just put up a 'wanted' request and see what happens.
Yes. you will need to 'unmodify' the boost that's probably been applied. There should be two coils on the tube base and two on the main chassis, all in series with pins 1 and 14 which are the CRT heaters. These may be present and shorted out or missing and linked over. It's vital they are re-instated or else a replacement tube will have a very short life.

Re: Philips 22CS1002/05t TV
 

The date code is usually the last part of the second line in the white stamp on the bell of the tube, so that would indeed be a way to tell if it's a later one though I'm not sure from which year on they were more reliable. I'm guessing some time around 1984 if this coincides with the K40 chassis. In that case it's easy: By that time they were already stamping two digit years, so 84 for 1984, etc.

The revision is also in the same stamped code, but same problem: I don't know which revision is best.

There might also be unknown differences between factories.

Re: Philips 22CS1002/05t TV
 

The Philips 22CS1002 employed one of the early short life 30AX tubes. I well remember having 3 year old versions arriving on the workbench with completely flat tubes. Many of these were flat during the guarantee period but customers just became used to the poor picture quality requesting a service call when something more noticeable became apparent.
Mullard did replace a number of these low emission tubes well outside the guarantee period but you had to speak to the guys at New Road 'nicely' !
This very short life was quite a surprise due to the longevity of the previous 20AX series that were fitted with an almost identical gun assembly. [These were usually destroyed in the Philips G11 smoothing cap saga rather than failing due to an unreasonably short service life.]
Something must have gone wrong in production, maybe an impurity or an unsuccessful change in manufacturing procedures. There is a lot of magic in CRT production.
Typical of Philips/Mullard the problem was recognized and soon rectified producing the later 30AX tubes that very rarely failed even after years of service. They probably produced the best quality picture ever with their 7.5kv focus potential, fat monitor crt type neck and pin sharp colour.
You may find a scrap receiver with a good tube. They can be replaced in about ten minutes, no convergence adjustment needed with just a tweak to the drives and grey scale. hope you get it sorted. The K30 is a cracking example of Philips technology. Regards, John.

Re: Philips 22CS1002/05t TV
 

Something very weird happened. I had a couple of days in which it warmed up very quickly, about 10 minutes, and in the couple of days since it hasn't warmed up properly at all. It's been om about 70 minutes now and it's still quite dark. 40 mins being the usual warm up time before. I've counteracted it a bit by turning up the brightness. I'm hoping that this problem is temporary like the fast-warm up was.

Is it fairly easy to spot how to un-boost it?

Not really sure how to name a thread looking for a replacement. 'Compatible Replacement tube for Philips K30 TV' maybe? And a list of the models mentioned here in the thread itself? :)

I recall the 'technician' turning a few things in the back, like screws I'd guess, to move the screen edge positions. I'm a little puzzled as to how the newer technician did such a bad job on the geometry, it's so off, hence why I'd like to do it myself this time. The distortion is very evident. But he did mod three of the channels into video channels, fix the jumping and flickering, and fix something else which was odd. When I had it on the dedicated VCR channel (8), it was noticeably only showing in one field. Didn't seem noticeable on videotapes, but on everything else it was very clear. especially if text was on screen. He sorted that out, not sure if it was technically a fault or if it was supposed to be like that as part of the design.

Re: Philips 22CS1002/05t TV
 

It appears the cathodes in your CRT have completely failed. A bit like the dead parrot in the Monte Python sketch!

I think it has had it. Removing the 'boost' will probably reduce the emission to zero. The heater ballast choke on the CRT base connector has probably been shorted out to increase the CRT heater volts but this is a very short term dodge at the best of times. There may be one in each heater lead so you must check this very carefully as these shorted chokes need to be reinstated before installing a replacement CRT. Failing this the replacement will have a very short life.

A good CRT will warm up fully in 5-10 seconds. No need to list all the model numbers. You require a A56 540X 22" 30AX CRT.

I hope Polly Parrot still has a heartbeat. Regards, John.

Re: Philips 22CS1002/05t TV
 

You need to put "Wanted: A56-540X CRT". That'll do! Once you get one we can guide you through removing the boost modifications - it's not too hard.

Re: Philips 22CS1002/05t TV
 

I wouldn't be too hard on the "technician". It sounds like he made the best of an otherwise impossible task.

Re: Philips 22CS1002/05t TV
 

Completely agree. It's just an old telly. J.

Re: Philips 22CS1002/05t TV
 

There were two technicians. The last one, other than messing the geometry a bit did a nice job, fixed a lot of other problems with it.

The previous one pretty much caused this by over-boosting the set when it was taking about 10 minutes to warm up. He's the same one who wrote off my very nice ITT v2000 player as well, when he wired it all up wrong after a minor repair and literally blew it up. I suppose it might be salvaged with some replacement parts, but it'd be a big job. Other things with 'petty' damage too. Unfortunately it's only over time as it goes along and I learn that I'm starting to understand all of this and that the fjrst techie really wasn't that competent at anything.

The tv's on now for the first time in four days. It's bern on just over an hour and it's finally warming up to a ueeable level. I've been watching short dvds on the laptop in the meantime when i wanted to watch something.
But my new Sinclair zx Spectrum Next is due in a couple of weeks, and wuth my hdtv inaccessible for at least another two months, I'll have to make the most of this tv for it.
The second technician said something about attaching heaters to give it a push to warming up. It'd be the compromise option if i can't source a replacement tube.

Thanks again to everyone for your help.

Re: Philips 22CS1002/05t TV
 

To be honest he was a brave man to tackle the V2000 series VCR. I was far too busy to have anything to do with them as were many other repair guys. They just took too long to repair and customers were not willing to pay the price. I was glad to see the shot of them as almost everyone in the trade was.

A duff tube is a duff tube and I really hope you find a replacement. They were produced in huge numbers and you may find a wreck example with a good 30AX tube. Often the rusted bashed about receivers produce good tubes. Good luck with it. John.

Re: Philips 22CS1002/05t TV
 

I've heard there's someone (not on this forum) in the North of England with a shed load of TV's. Mainly G8 and G11 which are no use to you, but I spied an Amstrad CTV2200 which is almost guaranteed to have a decent 540X in it. However, he's been told these sets are worth a fortune (they aren't) and is holding out. They aren't on eBay, but I think they can be found on Facebook via the usual forums. Good luck!

Re: Philips 22CS1002/05t TV
 

Thanks, I'm not sure who that is. The 'worth a fortune' myth is something that's been going around for ages now in so many retro circles. I used to buy a lot of video tapes until the myth of their value being high started, and now people ask stupid money for even the most worthless of tat that the charity shops throw away.
I've seen people asking hundreds for small portable CRT TV's on ebay as well, it's ridiculous.

On a different note, does anybody know why RGB flickers when it goes into this set? I currently use a scart-block to plug the various scarts into (although I usually only have one in it at a time - its just more practical that reaching around the back all the time), which goes into an Alba vhs; that then converts the signal to RF, which is plugged into the back of the TV. I'm not sure if the flickering is an issue with the TV or the VCR?
In time, when the set-up is finally complete, I am thinking of replacing the VCR with a dedicated scart-switcher box, a good powered one that autodetects, which will then go to a SCART-RF modulator and then into the TV. I have the new Sinclair ZX Spectrum Next due in a couple of weeks or so, and that only outputs via RGB, so there will be a lot of flicker, that I need to try and find a way to work around. Thanks :)

Re: Philips 22CS1002/05t TV
 

Am I right in thinking you intent to connect a RGB only source (the Spectrum NEXT) via a VCR? I don't think this will work. As far as I'm aware, VCR's only accept composite video via the SCART, in which case you won't get anything to display. You would need a modulator that accepts RGB, either a modern one, or something like the ones used on the Amstrad CPC or the Amiga.

Re: Philips 22CS1002/05t TV
 

My dvd player works via the scart input on the vcr, i get a picture, but it flickers. I can solve the problem by switching the rgb output off on the dvd player. The new Spectrum doesn't give that option, output is rgb only over its scart

Re: Philips 22CS1002/05t TV
 

What model is the VCR? Normally, they don't support RGB at all, but it may be a VPT model; those sometimes support RGB.

What kind of flicker is it? Is the picture steady but modulating in brightness? Are the colours right?

Re: Philips 22CS1002/05t TV
 

The vcr is an Alba, that's all i know. Maybe the scart switcher block is responsible for responsible for the rgb?
The colours/brightness flicker quite fast, kind of like Macrovision but at a much qhicker rate.

I've popped a post up in the wanted section for a replacement tube. No luck as of yet.

Re: Philips 22CS1002/05t TV
 

Some VCRs had an AV2 SCART with RGB pass-through to AV1. If AV1 on the VCR is connected to AV1 on the TV set and an RGB source played into AV2 on the VCR, the TV will display this RGB signal.

The purpose of this was to connect a pay-TV decoder, which were popular in some Continental countries. When watching a scrambled programme, the decoder would take in a composite signal from the VCR and output an RGB signal, which would then wend its way to the TV. (The decoder's output being RGB made it difficult to record unscrambled programmes. You could record scrambled programmes all you liked; but if you wanted to lend a tape to a friend, you would have to lend them your decoder as well.)

Re: Philips 22CS1002/05t TV
 

That makes sense, thanks. I'll have to see how the spectrum deals with it.

Going back to general tv tube issues, while ive been phoning and messaging around trying to see if there's a suitable tube anywhere to be found, I've twice been told about 'flashing' the tube, (maybe also a 'reactivator'?) which will apparently either restore it, or kill it?

Re: Philips 22CS1002/05t TV
 

It'll probably do neither. As it's been overrun to within an inch of its life it'll just look at you. Dead parrot? That's the one.

Re: Philips 22CS1002/05t TV
 

Well I need to do something. If i can't find a replacement tube, i could do with another tv of this 'wooden' style. Took me ages to find this one :(

Re: Philips 22CS1002/05t TV
 

That wasn't my experience in Germany or Spain.

Canal Plus used Nagravision, scambled. The decoder would receive a composite PAL signal direct from the VCRs tuner, output on a pin of the SCART and would feed a decoded PAL signal back to the video input pin of the scart socket. This picture could then be recorded or simply viewed through the VCR.

The relevant preset on the vcr would be set to 'decoder' on the tuning page, thus automatically switching the decoder into the loop when that preset was called up.

For older equipment with no 2 way SCARTs, a separate unit consisting of a RF modulator, tuner and SCART was available . This went between the decoder and the non- SCART VCR or TV.

Re: Philips 22CS1002/05t TV
 

Can anyone suggest anywhere else, groups/pages etc for me to try to look for a replacement? :)

Re: Philips 22CS1002/05t TV
 

It's worth a trawl through Facebook Marketplace, plus other sites like VRAT.
Just realised I have a K35 in the shed which MIGHT have a reasonable tube. I'll get it out and put the BK on it. If it's good are you up for a journey?

Re: Philips 22CS1002/05t TV
 

If it works, I'll see about a trip up :)

I've been asking at a local house clearance company today. Apparently they get loads of crt sets and just skip them. I doubt there's anything old enough to suit my needs, but I'll drop them in a list of compatible models as what I've been told on here and with a fluke of chance something viable might be there :)

Re: Philips 22CS1002/05t TV
 

Here's a tip: I would just tell them to let you know if anything 'wooden' turns up! Or any Philips ;) They're unlikely to bother looking at a lot of meaningless (to them) model numbers, which aren't exactly easy to see on the sets themselves.

Re: Philips 22CS1002/05t TV
 

You have to put yourself out and accept ANYTHING offered with thanks, even if it is a pile of rubbish! If you turn anything down or appear 'picky' they won't bother to contact you. Just a bit of useful advice from someone who has a massive collection of 'junk'. John.

Re: Philips 22CS1002/05t TV
 

Hi. Found the K35, but need to find the tube base for the BK. Fingers crossed - I'll know tomorrow.

Re: Philips 22CS1002/05t TV
 

I'm trying to compile a list of known models with the sutiable tube. So far I've put this together. I know there are some others missing, such as some Philps K30, K35 & K40 set model numbers, but I'm not having luck finding specific model numbers online. If anyone knows of any more to add, or if there's any errors in the list,I'd appreciate any extra info. The more I know about, the easier it is for me to try and source a replacement. I'm planning on dropping these lists off around the local House Clearance outfits :)

Sanyo 5133
Amstrad CTV2200
Ferguson TX100 or other Ferguson TX 22” sets
Decca 130
Grundig CUC 22” models
Philips or Pye 22CS1002
Philips 22CS52744
Philips 22cs5755
Fisher FTM656

Re: Philips 22CS1002/05t TV
 

Thanks :)

Re: Philips 22CS1002/05t TV
 

Almost any Pye/Philips model after ~1980 starting with 22 would have such a tube. 22CS and 22CE for sure. Pye might have called them 56KS or 56KE, I think. Do note that 22CE models use a 2A chassis which seems relatively rare now and might be more worthwhile to restore than the K30.

Some Grundig 22" sets might use a 90 degrees Japanese tube though, so look carefully.

Re: Philips 22CS1002/05t TV
 

I tend to agree with HKS above - I'd suggest the house clearance get in touch with any wooden TV. There won't be many, other than those in an attic! Of course you might miss a TV22, but I imagine most house clearance firms would be well tuned into those.
Who knows, you might get something more interesting than a K30. And if it's not one you want, then I'm sure there will be someone on here who'll take it off your hands.

Re: Philips 22CS1002/05t TV
 

Any luck on that set you mentioned finding? :)

Re: Philips 22CS1002/05t TV
 

Yes - and the tube, though not 100%, is certainly pretty good and, beaing in mind it hasn't been used for some years, should come better with use. The TV also will have the small coils in case they are missing. PM me if you're up for a journey!

Re: Philips 22CS1002/05t TV
 

I'll get back to you by PM a bit later. If i can transfer a working tube into my set, I'll be very happy :)

I do have another wooden Philips set in storage. It's a few years later down the line. Not sure of the model number, but it's got a digital tuner, scart and remote control. Has it's own issues, the horizontal- centre part of the screen doesn't stretch out properly, it's squished in the middle. It does open out a bit over time, but never fully. Always comes on with thr volume at full blast too. Not sure if it's saveable.

Re: Philips 22CS1002/05t TV
 

In Cradley Heath, there is a 22" Philips G11 on sale for £50 on ebay. It may not have the tube you need but in my humble opinion, the picture and sound quality will be hard to beat. Certainly, the picture shown on the advert is very good as is mine.

Chris

Re: Philips 22CS1002/05t TV
 

No, that will be a 20AX CRT so no good for this set. Even if it would do, I'd be reluctant to scrap a good set like that.
My tube has your name on it!

Re: Philips 22CS1002/05t TV
 

Is there a link to the cradley heath one please? I can't find it.

I'll still pop up to get the tube from Wales. Just been a tad sidetracked again at the moment