[TechAssist] Re: Sony TV KV27EXR25, STRS Running Hot
- From: George Johnson <geojohn49@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 26 Sep 2002 08:39:24 -0700 (PDT)
Bruce,
You need to use the STRS6301 without the A. The A
tends to run hot. If you still have a heat problem,
you need to check the caps in the primary circuit.
geojohn
Johnson TV
570-427-4637 Voice & Fax
--- Bruce Youmans <youmans@xxxxxxxx> wrote:
> 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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=====
Johnson TV & Satellite
Weatherly, PA 18255
570-427-4637 Voice & Fax
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