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Old 4th Mar 2016, 9:55 am   #81
gary_crutchley
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Default Re: Vidor CN430 My Lady Anne

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Originally Posted by Chindit View Post
In this case, may I revise my advice slightly. Start with aerosol car upholstery cleaning foam and scrub it in a circular motion with a stiff tooth brush or nail brush. Then wipe away the residual foam and lifted muck with a damp floor cloth or similar. Pat dry with a towel and then leave to dry thoroughly.
Thanks Colin, I will give that a try.
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Old 4th Mar 2016, 9:58 am   #82
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Default Re: Vidor CN430 My Lady Anne

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I have a Lady Anne and part of the covering is a deep cream which looks like it's nicotine stained. As it came form an aunt that never allowed anyone to smoke in her house and kept the radio covered when not in use I can say it's the original colour.
Yes I think you are right, I don't think it was ever white. That said many light coloured plastics like this do yellow with age. So I image over the years the colour will have become darker.
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Old 4th Mar 2016, 11:18 am   #83
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Default Re: Vidor CN430 My Lady Anne

I don't know if you're aware that there are two versions of this set with different colour schemes. I have one of each and here they are.

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Old 4th Mar 2016, 11:25 am   #84
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Default Re: Vidor CN430 My Lady Anne

I'd also suggest foam cleaner, but don't scrub too vigorously. I once spoiled a Sky Queen that way
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Old 4th Mar 2016, 11:47 am   #85
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Default Re: Vidor CN430 My Lady Anne

My one is the sort of brown one on the left.
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Old 4th Mar 2016, 12:06 pm   #86
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Default Re: Vidor CN430 My Lady Anne

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I don't know if you're aware that there are two versions of this set with different colour schemes.
I was aware of the two versions, I have the red one. The colouration of my case looks very similar to yours.
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Old 4th Mar 2016, 12:07 pm   #87
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Default Re: Vidor CN430 My Lady Anne

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I'd also suggest foam cleaner, but don't scrub too vigorously. I once spoiled a Sky Queen that way
I tried that Phil, not much of a difference. The covering is thin in places so I don't want to scrub.
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Old 6th Mar 2016, 12:08 am   #88
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Default Re: Vidor CN430 My Lady Anne

Hi all,

I have another update. Today we replaced the rather aged two core mains cable with a new three core mains cable with the live switched. We also earthed the chassis at the same time.

Whilst we had the chassis out we had another look at why the lid alarm tone didn't work. We bridged S6, the switch on the case but the alarm tone was still not working, hence we concluded it is not a switch issue. Moving V3 around restored the tone briefly, confirming that the issue is a connection on V3.

Last edited by gary_crutchley; 6th Mar 2016 at 12:09 am. Reason: Typo
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Old 6th Mar 2016, 12:30 am   #89
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Default Re: Vidor CN430 My Lady Anne

Check the valve base connectors on V3. Looking down onto the valveholder, with the valve removed you should see two prongs in each of the valve base connections. If there is only one prong, replace it. There may be more than one faulty connection on each valve base.

I had this on a set I did last year. All the connections seemed OK but moving the valves caused reception to come and go.

keith
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Old 6th Mar 2016, 12:39 am   #90
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Default Re: Vidor CN430 My Lady Anne

Will do Keith, it sounds like the same issue.
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Old 6th Mar 2016, 1:15 am   #91
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Default Re: Vidor CN430 My Lady Anne

The chassis should not be earthed on this set; there is no mains transformer in this model. The extra connection from Neutral to Earth will trip an RCD as soon as it is plugged in.
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Old 6th Mar 2016, 9:06 am   #92
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Default Re: Vidor CN430 My Lady Anne

In fact while you're at it you might as well check all the valve bases. Could save you future frustration!

There is a mains transformer on this set but there's only a two core mains lead. I replaced the mains leads on mine with two core leads. I don't know if there are any benefits to earthing the chassis. It works well enough without earthing, after all it was designed to be portable.

I was listening to one of my 430s yesterday in our almost complete conservatory. Might have to have one permanently on show in there.

Keith
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Old 6th Mar 2016, 10:23 am   #93
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Default Re: Vidor CN430 My Lady Anne

Hi Keith,

With the obvious exception of AC/DC sets there seems to be much debate on here about whether to earth or not to do so. We decided to see if it made any difference to the audio quality, and it didn't. However, I have a Bush SW43, when we earthed that set we had lots of interference problems. The outcome was that we removed the earth.

There is a mains transformer on the Vidor CN430.

Regards,

Gary
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Old 6th Mar 2016, 12:40 pm   #94
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Default Re: Vidor CN430 My Lady Anne

As you say, earthing is still of interest, but now that the majority of electrical socket outlets are protected by RCDs, earthing a chassis fed via an RCD is no longer strictly necessary as a safety feature. Others may disagree! However, if your electrical installation contains MCBs or fuses - as mine did until recently - all exposed metalwork should be earthed.

Personally, I prefer to retain the original core arrangement when replacing a mains lead.
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Old 6th Mar 2016, 11:04 pm   #95
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Default Re: Vidor CN430 My Lady Anne

Thanks Phil. My house was built in 1993, the consumer unit has fuses and a couple of MCB's.
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Old 26th Mar 2016, 4:41 pm   #96
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Default Re: Vidor CN430 My Lady Anne

Hi all,

By way of an update, as previously recommended today we replaced C18 (Valve 3 screen grid decoupling capacitor) and R10 (Valve 3 anode load resistor.) The radio is now working well on both wavebands.

Thanks to everyone who provided advice, and especially to Phil (G4SPZ) and Mick (vinrads) who helped out with parts. Your help is greatly appreciated.

I am very impressed with this little set, an image of which can be found at:

https://www.vintage-radio.net/forum/...pictureid=3483

Also attached below.

Very best regards,

Gary
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Old 27th Mar 2016, 4:51 pm   #97
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Default Re: Vidor CN430 My Lady Anne

The set has developed a strange intermittent issue. Whilst using the set the sound went off a couple of times, but it remained powered. Both wavebands were affected.

Initially I suspected V3 as the base is definitely a bit suspect. Waggling that valve did seem to have an effect. However, I think I narrowed it down a bit more to a connection issue on the wave change switch.

Anyone seen anything similar?
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Old 27th Mar 2016, 5:11 pm   #98
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Default Re: Vidor CN430 My Lady Anne

See posts #68 and #89, amongst others - you're going to have to grasp the nettle and replace the valveholder!
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Old 27th Mar 2016, 5:27 pm   #99
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Default Re: Vidor CN430 My Lady Anne

Hi Phil,

There is definitely an issue with the V3 valve holder, I know that. There does also seem to be something with the connections on wave change switch.

The valve holder is riveted to the chassis, how can these be removed please?

Regards,

Gary
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Old 27th Mar 2016, 5:39 pm   #100
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Default Re: Vidor CN430 My Lady Anne

Rivets can be drilled out, using a high speed steel twist drill slightly larger than the rivet. Use gentle pressure. The rivet head will usually part company with the rivet body, which can then be pushed out. Tubular rivets can be removed from either end. You can secure the new valveholder with a couple of 6BA bolts, nuts and shakeproof washers.

Before you start, take plenty of photos of the wiring to the pins, and make sure the replacement valveholder has its pins in the same relationship to the fixing flange. You want the pins to be as near as possible to their original locations, or else some wires may not stretch.
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Last edited by Phil G4SPZ; 27th Mar 2016 at 5:45 pm. Reason: Afterthought
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