[TechAssist] Re: Sony KV27FV310 flashes bright and shuts down.
- From: "Dan Williams" <wizhd@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 29 Jun 2005 10:36:51 -0500
From this site:
Set turns on with excess brightness,then shut down.
On the CRT "C" board the driver IC shorts IC702 (did not provide
number).He says this is becoming a common failure.
IC702 pins 7&8 measured short.
A protection mod is a dual diode (common anode?) Sony part# 871911827.
You solder it across L701 (either direction is OK) Guess this is some
kind of spark, or discharge suppression to protect the IC.
Phil Bader
--
Dan W
Wizard Electronics
Jacksonville, TX 75766
wizhd@xxxxxxxxxxxxxxxx
----- Original Message -----
From: "John Mielke" <maintv2004@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, June 27, 2005 6:32 PM
Subject: [TechAssist] Sony KV27FV310 flashes bright and shuts down.
> Does anyone have a hint for this problem before I give up on it? This
> Sony
> KV27FV310 with chassis BA-5D (SCC-S65K-A) made in 2003 came in with the
> picture flashing bright and going to shutdown. The timer light would
> flash
> 2 times and repeat. You needed to press power twice to turn on again. I
> have replaced IC702 twice (TDA6108JF), also R715, C704, D704, C705, C706
> on
> the CRT board and C541 on the A board, all in the +205 source area. I
> resoldered everything on the CRT board. The problem occurs after the set
> plays about 1 hour with antenna or test pattern signal. It will not occur
> with the back off.
> John Mielke
> Main TV
> 636 Main St
> Longmont, Co 80501
> 303 776 6955
> 303 776 0792 fax
> www.longmontmaintv.com
> maintv2004@xxxxxxxxxxx
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