[TechAssist] Re: SONY KV-27TS32
- From: Kevin <kevintv@xxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 30 Jun 2003 13:51:46 -0700
Here is the listing from last year. HTH. By the way, it is unusual for
both the HOT and the VDR to both fail at the same time. I have always
had one or the other not both. Double check all your connections.
Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx
Harry,
In addition to what you replaced,
few other parts goes defective on this unit:
a. C608
b. C611 and C612
c. T603
d. R622, if damaged VDR601 is defective.
I troubleshoot this power supply as a stand alone unit.
Using a 40w light bulb on the B+ line and power up with variable
transformer slowly from zero VAC.
At 36VAC, the supply should be 135 B+ , which remain stable as you
turn the AC up to 120VAC on the Transformer.
Look at the waveform at the emitter of Q601 (53KHz) for any noise or
ripples.
I had a defective T603 once that created your similar symptom.
Check for cold solder joints on the actual pin where the wire from the
transformer solder on to the pins.
At one time the PCB was cheaper to replace than repair in Canada.
Hope it helps' and if you need a copy of the schematic pdf, drop
me an email address.
Panday
>From: "harry fogarty" <snoopys2002@xxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] SONY KV-32V36 DEAD.
>Date: Sun, 16 Feb 2003 16:08:20 -0800
>
>
>I got this sony here that is dead. i had replaced
>Q601,Q602,R607,C609,C610,VDR601,R610,D609,R614,R611,R608,R613,IC641,Als
o
>the
>hot.Done all the soldering in the horizontal drive and the h.out
>sections.The set is still dead and also Q601 and Q602 is getting hot
very
>quick.Any ideas from anyone would be appreciated.Thanks
>
>Harry Fogarty
>Prince Rupert Repairs.
>Prince Rupert B.C.
>Canada.
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Nova Service
Center
Sent: Monday, June 30, 2003 1:32 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] SONY KV-27TS32
Hi Everyone
The customer complaint was that the Sony TV ( Model # KV-27TS32 ) was
dead . I found 2 regulators ( 2sc4834 ) and horizontal output transistor
( 2sc4927 ) were short. Also .1 ohm resistor was open and VDR 601 was
bad. replaced all tv turned on and worked for 10 minutes. The a big
sound and all the parts except VDR 601 went bad again. The VDR 602 and
603 looks good.I don't know what I am missing . Any suggestion would be
appreciated.
Nova service Center
240-632-2994
Medi
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