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Post by fuxtor on Jul 28, 2019 11:41:01 GMT -5
Hello, I have a Rotel RDV-1060 dvd player with no apparent power. I've tested the power supply to discover all voltages are good except for 2 pins which need 3.5acv and they are measuring 7.2acv. I've checked the few resistors inline with these pins and they check out good. Thinking maybe the little transformer may be bad?? Schematic is available online, I'll post a snip .... Thx Attachments:
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Post by fuxtor on Jul 28, 2019 11:46:06 GMT -5
A pic of the board.... I should correct the voltage... The board says 3.6acv.... not 3.5  |
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Post by fuxtor on Jul 28, 2019 17:42:32 GMT -5
D61, the 16v zener is reading approx 25dcv on both legs? My understanding is the voltage should be dropped here? Is that right?? It does pass the diode function test on my dmm.....
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Post by fuxtor on Sept 2, 2019 10:55:18 GMT -5
Nobody on this forum these days??
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Post by mastertech on Sept 3, 2019 19:01:11 GMT -5
For me, I am tied up in a big project right now and have no time for anything else. And probably for at least another month. Sorry. Don't know about anyone else here.
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Post by fuxtor on Sept 3, 2019 19:28:04 GMT -5
Ok... Thanks for that. I'm in no rush. Good luck with your project!!
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andy
New Member
Posts: 11
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Post by andy on Sept 10, 2019 21:23:52 GMT -5
D61, the 16v zener is reading approx 25dcv on both legs? My understanding is the voltage should be dropped here? Is that right?? It does pass the diode function test on my dmm..... D 61 is a Schottky diode (according to the symbol in the schematic). Those have a very low voltage drop when forward biased. That is the reason for the small voltage difference. There may be some other faulty part. Just my 2 cents. |
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Post by fuxtor on Sept 10, 2019 21:41:05 GMT -5
Thanks for the input! I'll move on
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