[TechAssist] Re: Sony KV-19TS20-no stby 5v

I did one of this vintage just yesterday. I followed the AC upstream of =
the
power relay and found the standby rectifiers. Downstream of the standby
rectifiers was mostly AC, the electrolytic capacitor at that location =
was
bad. I think it was C605, 22ufd at 250V. This also supplies the power =
relay,
you can confirm the problem and get your bearings by measuring for DC =
and/or
AC at the coil of the power relay. It wasn't too hard to follow without =
the
schematic.

Arthur Bevilacqua
Essex Radio & TV
40 Main St
Essex, MA 01929


-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of jorge miret
Sent: Sunday, May 29, 2005 7:55 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Sony KV-19TS20-no stby 5v

Hello:
This Sony KV-19TS20 (oldie) is dead,has no 5v stby voltage.Found no =
opened
resistors or shorts.Rem.control sensor and power sw.have only .9v.
Very dificult to trace it without schem.Would somebody have a PDF at =
least
of power supply section that can send me to continue t/s.
TIA,
Jorge.

Jorge Miret-Puerto Rico
J.C.Electronic Repairs
Tel:787-761-0920
jorge_miret@xxxxxxxxx
        =09
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