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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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5th Mar 2018, 12:34 am | #1 |
Hexode
Join Date: Dec 2012
Location: Worcester, Worcs, UK.
Posts: 257
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Philips 22CS1002/05t TV, purple and dark picture
this set, with a number of issues, has previously been discussed here, if it helps: https://www.vintage-radio.net/forum/...=110106&page=4
I had this set 'quick serviced' last year to deal with some of the minor issues, picture jumping and colour flickering essenstially. It was fine for a while, but the fickering returned just before christmas, along with a new problem. It seemed to come on with a purple/reddish tint. It faded quickly, but as time's gone on, it's gotten much worse. Now the TV starts pretty much pitch-black, and the image is a very dark purple. It'll now take about 10 minutes to come to a full brightness and proper colour. The problem seems to be getting progressively worse. Is there any idea as to what this is, and how to fix it? Thanks again for the help |
5th Mar 2018, 3:47 am | #2 |
Banned
Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
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Re: Philips 22CS1002/05t TV, purple and dark picture
Purple Haze, Jimmy Hendricks.
Sorry, no idea really but CRT faults give some odd hues. |
5th Mar 2018, 9:15 am | #3 |
Dekatron
Join Date: Nov 2003
Location: Near Leeds, West Yorkshire, UK
Posts: 4,609
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Re: Philips 22CS1002/05t TV, purple and dark picture
No green?
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Mike. |
5th Mar 2018, 9:37 am | #4 |
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Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
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Re: Philips 22CS1002/05t TV, purple and dark picture
Could be that there is no or intermittent drive to the green gun, or the gun is toast.
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5th Mar 2018, 11:54 am | #5 |
Octode
Join Date: Apr 2005
Location: Peterborough, Cambridgeshire, UK.
Posts: 1,898
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Re: Philips 22CS1002/05t TV, purple and dark picture
If this is the K30 chassis there is an electrolytic capacitor on the A1 supply located top middle of the panel near the A1 control I think it's 4.7 mfd at 400v volts. This is a dim distant memory so don't quote me on that ! But it will be around that value.
It would dry up and cause brightness and greyscale problems on this and the KT3 chassis. I think we used to replace it with a 10 mfd for some reason which I can't remember... Worth a look. Rich.
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5th Mar 2018, 12:10 pm | #6 |
Dekatron
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
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Re: Philips 22CS1002/05t TV, purple and dark picture
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5th Mar 2018, 12:11 pm | #7 |
Dekatron
Join Date: Oct 2003
Location: Croydon, Surrey, UK.
Posts: 7,580
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Re: Philips 22CS1002/05t TV, purple and dark picture
Yes correct. Go for the capacitor first. Very common to give greyscale problems. Easy and cheap fix.
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5th Mar 2018, 12:52 pm | #8 |
Dekatron
Join Date: Apr 2005
Location: North Wales, UK.
Posts: 6,928
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Re: Philips 22CS1002/05t TV, purple and dark picture
Also if the decoder IC is a TDA3560 in a holder, remove the holder and solder directly to the PCB.
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5th Mar 2018, 12:55 pm | #9 |
Hexode
Join Date: Nov 2010
Location: Market Drayton, Shropshire, UK.
Posts: 486
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Re: Philips 22CS1002/05t TV, purple and dark picture
hi
I agree with sam about this no green . can you check the collector voltage on the three colour output transistors . The green one could be o/c base collector if these are ok looks like the green gun in the crt is low taking a long time to warm up regarde Derrick |
5th Mar 2018, 1:10 pm | #10 |
Hexode
Join Date: Dec 2012
Location: Worcester, Worcs, UK.
Posts: 257
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Re: Philips 22CS1002/05t TV, purple and dark picture
thanks for the help everyone. There was no fault in this way until it was 'fixed', so i thoguht it being a direct issue with the guns was remote, unless he caught something relating to it on one of the circuit boards. He was soldering a lot, and tweaking things to get the picture to improve, I thought h must have accidentally dislodged or damaged something while messing around inside the set.
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5th Mar 2018, 4:10 pm | #11 |
Heptode
Join Date: Mar 2015
Location: Lefkada, Greece
Posts: 969
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Re: Philips 22CS1002/05t TV, purple and dark picture
Hi. I have a KT-3 chassis Philips from the same era. Mine has a completely black picture. See here:
https://www.vintage-radio.net/forum/...d.php?t=140773 |
5th Mar 2018, 10:36 pm | #12 | |
Octode
Join Date: Apr 2005
Location: Peterborough, Cambridgeshire, UK.
Posts: 1,898
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Re: Philips 22CS1002/05t TV, purple and dark picture
Quote:
the tube base socket and pins are worth a check as are the gun switches I cant remember having any problems with these on the K30 but the sets are a lot older now. the gun switches certainly went leaky on other sets. the BRC 3000/ 3500 springs to mind... Rich.
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9th Mar 2018, 1:51 pm | #13 | ||
Hexode
Join Date: Dec 2012
Location: Worcester, Worcs, UK.
Posts: 257
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Re: Philips 22CS1002/05t TV, purple and dark picture
Quote:
The repair chap said something about soldering a board in that might be loose to fix it? |
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9th Mar 2018, 1:54 pm | #14 |
Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,866
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Re: Philips 22CS1002/05t TV, purple and dark picture
i.e. hard-wiring one of the plug-in daughter boards because its edge connections have become intermittent.
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9th Mar 2018, 5:24 pm | #15 |
Octode
Join Date: Apr 2005
Location: Peterborough, Cambridgeshire, UK.
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Re: Philips 22CS1002/05t TV, purple and dark picture
Ok Fair enough.. Have you tried replacing the capacitor or checking it?
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10th Mar 2018, 2:23 pm | #16 |
Dekatron
Join Date: Apr 2005
Location: North Wales, UK.
Posts: 6,928
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Re: Philips 22CS1002/05t TV, purple and dark picture
It has been known for the A1 presets on the K30 to disintegrate so a meter is your friend here.
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