[TechAssist] Re: Sony 35"tv Model KV-35S45\repeat failure of reg & hot.
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 29 Sep 2003 18:32:46 -0400
Just for the record Mando, you did not indicate if you used generics or Sony
originals. Some generics are okay if you know they are from a good source (I
recommend B&D Enterprises for one). Anytime when servicing these (and
especially so with a HOT shorted) always resolder the horizontal driver
transformer and replace the small electrolytic in the base of the horizontal
driver transistor. For this model that is C502 (0.47mfd/50v). After doing
this, if the HOT still shorts I would suspect the flyback (which I think is
NLA for this model).
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@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "armando guerra" <birdie@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, September 29, 2003 3:33 PM
Subject: [TechAssist] Sony 35"tv Model KV-35S45\repeat failure of reg & hot.
> This set came in dead.I found shorted or open the following parts.
> Hot=2SC5148
> Reg=MX0841
> R607
> VDR 601
> VDR602.
> After replacing all.I ran the set for about 10min,turned off the set and
> touched the hot to see how hot it getting.It was warm but not hot.I then
> ran it again and after 45 min,set turned off.Checked and found the
> reg,hot,shorted again and the R607 wasopen.
> The flyback rings ok . Any idea's or tips on this problem?I checked just
> about everything in the ps bd and did not find any more parts open or
> shorted.This tv has the PS bd seperate from the main ckt bd.It does not
> use the switching transistors Q601\602.
> Thanks for any and all the help.
> Mando
> Birdie's TV & Electronics
> Casa Grande, AZ
>
>
****************************************************************************
*
> Classifieds! Buy or Sell!
> http://sell.tech-assist.org
> The Tech Address Book:
> http://www.tech-assist.org/secure/tip/contact.htm
> Add a Repair Tip Here, or Change/Remove your Email Address:
> http://www.tech-assist.org/secure/tip/main.htm
> Lost Password:
> http://www.tech-assist.org and select "Lost your Login Info?".
> Email Archives:
> //www.freelists.org/archives/techassist/
>
*****************************************************************************
Classifieds! Buy or Sell!
http://sell.tech-assist.org
The Tech Address Book:
http://www.tech-assist.org/secure/tip/contact.htm
Add a Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.htm
Lost Password:
http://www.tech-assist.org and select "Lost your Login Info?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
