[TechAssist] Re: Sony KV27FV310 flashes bright and shuts down.
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 28 Jun 2005 06:44:14 -0400
SYMPTOMS
Dead, retrace line, or white picture
RESOLUTION
IC702 on the C Board found defective, C541 might also be damaged.
CRT arcing can cause IC702 to fail. To prevent IC702 from becoming damaged
again.
Add a double diode in parallel across L701 as shown in the attached picture.
(diode.jpg)
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
----- Original Message -----
From: "John Mielke" <maintv2004@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, June 27, 2005 7:32 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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