[TechAssist] Re: JVC AV32D200 Dead Need some help
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 15 Dec 2003 10:32:59 -0500
I sent a troubleshooting procedure and a circuit description to your
personal email Al. They should help.
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Jim Myers
Since 1972
Telrad Electronic Services Co.
Fort Wayne, IN 46815
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----- Original Message -----
From: "Al Gutz" <alg@xxxxxxxxxxx>
To: "tech assist" <techassist@xxxxxxxxxxxxx>
Sent: Sunday, December 14, 2003 9:40 PM
Subject: [TechAssist] JVC AV32D200 Dead Need some help
This one has me stumped. Set is totally dead, no fuses were blown and
HOT was not shorted.
This model is the supply using the STRF6626, 2 opto-isol, and 2sd2088
transistor.
When plugged in all I get on STRF is raw DC of 165V on pin 3 and on pin
4 the 16V supply slowly varies from 16V down to about 10V then slowy
increases back to 16V, on the sd2088 I have 10V on all three leads and
about 12V on the opto PC901.
I have replaced STR and sd2088 and opto-iso and 2 1000u caps C911 and
C926 and checked every part in both primary and secondary, (where
questionable out of cct).
Connecting scope to STR show no pulse of any sort.
Tried connectiong my 16V supply to pins 3 and 4, then the STR will osc,
when I do this all my secondary supplies have voltage on them, it low
becacuse supply is only 16V but they all work.
Would anyone have a print of this set?
If it was a smaller set I would just tell cust not worth repair.
Thanks for any good ideas of information
Al G
Al's TV-Electronics
Pembroke Ont.
Canada
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