[TechAssist] Re: Sony KV27S66 Intermittent
- From: "Joel Jacobs" <jj@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 25 Jul 2003 13:18:18 -0400
I found the D620 tip in another database but this chassis does not have a
D606 or D620. There is a sticker on the back of the set that says chassis
BA-4D so I downloaded BA-4D Chassis.pdf from the files area and it's close
but there are differences. some areas match the print but reference
designators are different. Some areas are electrically different from the
print - as an example, on the print it shows the opto being fed from a 12
volt supply through a 1k resistor on the primary side but in this chassis
it's fed from a 120v supply through 10k. I've changed the opto and the
SE135 error amp with no luck. This chassis might have the diodes you say to
check with different reference designation. Could you possibly describe
where they are connected in the circuit?
Thanks Much!
Joel Jacobs
Ohio Consumer Electronics
31 Hill Road South
Pickerington, OH 43147
614-833-9696
----- Original Message -----
From: <Svatek227@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, July 25, 2003 12:34 PM
Subject: [TechAssist] Re: Sony KV27S66 Intermittent
> Check diodes D606 and D620
>
>
> Joe Svatek
> Owner
> Svatek's Electronics
> 227 Marten St.
> Neenah,WI 54956-2520
> Phone: (920) 751-8937
> Fax : (920) 751-3727
> email: Svatek227@xxxxxxx
>
>
>
> In a message dated 7/25/2003 9:25:41 AM Central Daylight Time,
jj@xxxxxxxxxx
> writes:
>
> > Hi Techs,
> > I worked on this set about a year ago for lightning damage - found a
blown
> > trace in the power supply off the collector of Q601 and Q601 itself was
> > blown apart. Well, it's back. It plays fine for a couple minutes then
the
> > power supply starts cycling off then back on about every 10 seconds. It
> > stays off about a second each time. The power relay does not
de-energize.
> > Nothing seems sensitive with freeze. This is not the kine blanking
> > problem - the power supply is shutting down. I found the print in the
> > files area but with my connection it'll be a couple hours downloading so
I
> > thought I'd ask here if anyone has seen this before.
> > Thanks much!
> >
> > Joel Jacobs
> > Ohio Consumer Electronics
> > 31 Hill Road South
> > Pickerington, OH 43147
> > 614-833-9696
> >
>
>
>
>
>
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