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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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23rd Mar 2024, 12:07 pm | #1 |
Triode
Join Date: May 2023
Location: Epsom, Surrey, UK.
Posts: 34
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Lopt
What would be a suitable check for intl diodes diode-split device? No reading on tester at eht outlet(transformer out of cct). Should be about 30V if OK. Primary seems to be ringing as viewed on 'scope.
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26th Mar 2024, 11:50 am | #2 |
Dekatron
Join Date: Apr 2005
Location: North Wales, UK.
Posts: 6,928
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Re: Lopt
In my experienec there's no easy check for a shorted diode other than replacing the transformer.
I assume the LOPT was deemed faulty when in the TV? What TV is it out of? That might help. For example the old Thorn 1691 mono portable was able to be repaired by the addition of a series diode following the internal shorted component - a common repair back in the day. Of course in a large screen colour set that's not an option. |
26th Mar 2024, 5:19 pm | #3 | |
Triode
Join Date: May 2023
Location: Epsom, Surrey, UK.
Posts: 34
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Re: Lopt
Quote:
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28th Mar 2024, 11:19 am | #4 |
Dekatron
Join Date: Apr 2005
Location: North Wales, UK.
Posts: 6,928
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Re: Lopt
Always worth trying HR Diemen - they still hold some stock for older items.
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