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Sets, Parts and Service Information Wanted (private buyers only, no swaps) If you need help obtaining components, sets or equipment, post a message here. Private buyers only - no traders. No swaps.

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Old 25th May 2018, 10:51 pm   #1
'LIVEWIRE?'
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Exclamation PM24M Valve (or known B5 base equivalent)

Does anyone have for sale one of the above in known good condition? Reasonable costs covered of course.
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Old 26th May 2018, 9:30 am   #2
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Default Re: PM24M Valve (or known B5 base equivalent)

Hi Livewire. A decent PM24M (equivs include PT4, CV1181, PenA1) will be hard to find, and likely expensive. Are you quite sure that yours is completely unserviceable i.e. have you had it tested? Cheers, Jerry

Ah, just seen your other post. Hope it checks out useable for you!
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Old 26th May 2018, 11:31 am   #3
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Default Re: PM24M Valve (or known B5 base equivalent)

Morning, Jerry - I haven't had the PM24M tested yet - sold my valve tester several years ago, more's the pity. As I know no-one local who has one, I've put a request in the 'Repair & restoration, etc., wanted section, but, as you know, posts have to be approved by a moderator before they appear. Another member suggested I check if the valve's internal wires are soldered to the pins. They appear to be O.K. by visual inspection using a magnifying glass, but I may cautiously try to re-.solder them
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Old 26th May 2018, 11:39 am   #4
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Default Re: PM24M Valve (or known B5 base equivalent)

My inventory shows a used PM24A if you're able to use that.

It's not been tested, but naturally I would test it.
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Old 26th May 2018, 11:46 am   #5
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Default Re: PM24M Valve (or known B5 base equivalent)

A PM24A would enable me to check that the radio is working, Graham. Please test it for me. I'll PM you my details shortly
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Old 17th Jun 2018, 11:54 am   #6
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Default Re: PM24M Valve (or known B5 base equivalent)

Bazz$CQJ(Barrie) has kindly tested my PM24M, and advises me that there is an open
circuit, possibly due to bad soldering in one of the pins, in it. If re-soldering the pins doesn't cure it, I'll be looking for a replacement, so may PM you, Graham, if your PM24A is still available.
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Old 18th Jun 2018, 9:04 am   #7
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Default Re: PM24M Valve (or known B5 base equivalent)

Graham, you have a PM re; the PM24A.
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Old 21st Jun 2018, 9:06 pm   #8
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Default Re: PM24M Valve (or known B5 base equivalent)

Graham, thanks for the valve, which arrived earlier today. I've very briefly tried it in the Philips radio, in which Vg2 is 210v and Va 195v, giving an Ia of 25mA, so at least the radio should be working at last! I'll willingly make a donation, plus postage. The original PM24M is u/s, and there seems no prospect of sourcing a replacement, so the 24A will be used instead.
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