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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

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Old 11th Nov 2019, 5:28 pm   #21
Sean Williams
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Default Re: Repair of industrial open frame monitor

Hi Glyn

Yes, the output transistor does get quite warm, as does the LOPT.

I had another look late last night and there are a couple of electrolytic caps that also appear to get quite warm - This cannot be right.

Will have another nose around with the scope later on, and see if I can find anything amiss - not sure why the caps should be getting warm - the test ok for shorts. and hold a charge.
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Old 11th Nov 2019, 5:32 pm   #22
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Default Re: Repair of industrial open frame monitor

If those caps are getting warm perhaps they are calling out "change me".
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Old 11th Nov 2019, 5:52 pm   #23
Sean Williams
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Default Re: Repair of industrial open frame monitor

Agreed, and I have (although with what I had, as opposed to exactly the right thing)

I rather wonder if said caps are receiving an unhealty quantity of AC - I will look again later
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