[TechAssist] Re: Sony TV KV27EXR25, STRS Running Hot
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 26 Sep 2002 21:32:08 -0400
These run ridiculously hot normally.......Just make sure you use plenty of
heatsink grease & resolder the power supply circuit really well....you will
see many ring cracks on these. Replacing all the small caps is a good idea
also.
Jeff Stielau
Shoreline Electronics Repair
125 Beech Tree Lane
Westbrook, CT 06498
860-399-1861
860-664-3535 (fax)
jstielau@xxxxxxxx
----- Original Message -----
From: "Bruce Youmans" <youmans@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, September 26, 2002 10:28 AM
Subject: [TechAssist] Sony TV KV27EXR25, STRS Running Hot
> Manufacturer: Sony
> Model: KV-27EXR25
> Chassis: SCC-D50F-A
> Problem: STRS 6031 Runs very hot.
>
> This set originally was dead. Found numerous bad solder connections on
power supply supply board. Repairing these did not fix the problem. Found
STRS-6031 voltage regulator bad. Replaced with an OEM "A" version. Set runs
fine. Regulator output voltage is normal at 158 volts and regulates well.
The concern is that after 20 minutes of running the regulator and heat sink
is very hot. Almost too hot to touch. Is this normal? I have ESR'd all
supply capacitors, all load voltages seem fine and regulator input ontput
ripple is within specification.
>
> Any thoughts appreciated.
>
> Bruce
> Bruce's TV Service
> Sierra Vista, Arizona
> Youmans@xxxxxxxx
>
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