[TechAssist] Re: Quasar SP2530DE-1/chassis AEDC142 won't power ON

Chaz, similar units have a problem with the traces around
D805 & D816, & resolder/replace the HOT and the HDT (horiz
drive xformer).  Flyback may be bad or need resoldering.
-Clint

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Clint Hamilton, Owner
Orpheus Audio/Video & Computing
Tech-Assist Administration
http://tech-assist.org

----- Original Message -----
From: "Chaz" <chaz@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, July 31, 2001 12:02
Subject: [TechAssist] Quasar SP2530DE-1/chassis AEDC142 won't
power ON


This similar question was recent elsewhere for a different
make/model.

This unit came in with an original complaint of "relay
chattering" - quite
audible.  Finally, it just quit coming on by remote or by
customer control
panel.  Only noticeable function is that once POWER ON is
selected, you here
the relay engage - no startup voltage, nor POWER LED status.

I found relay contacts to be charred and replaced it.  Same
result.  I replaced
the surrounding caps and some diodes.  Same result.  I later
found some bad
solder joints.  Again same result.  Unless I have missed some
of the immediate
or adjacent circuitry, I am stumped.. or the unit is
determined NOT to let me
"rekindle its life".

Anyone have a schem or even a partial for the front end of
this unit I migh
obtain and/or some suggestions?

Thanks in advance.
Chaz

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