[TechAssist] Re: Sony KV27S25 Chassis SCC-J71B-A Dead Set
- From: "Tomlee" <t8872695@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 2 May 2002 09:36:31 -0700
Hello.
I just copy and past from an article of Nasda.
Common Failures In Sony Direct View TV's
All,
This is a list of the common failures in the Sony Direct View. Most failures
are caused by Vertical or Horizontal problems. Sony Switch Mode Power Supply
Rebuild Parts
AA-1 Chassis
Q601
Q602
VDR601
VDR602
VDR603
R607
R644
2SC4834
2SC4834
Varistor
Varistor
Varistor
Fusible 0.1 ohm
Fusible 6.8 ohm
Sony Part #
8-729-019-51
8-729-019-51
1-807-288-11
1-810-053-11
1-810-053-11
1-202-933-61
1-212-853-61
AA-2 Chassis
Q601
Q602
R607
VDR601
2SC4834
2SC4834
Fusible 0.1 ohm
Varistor
Sony Part #
8-729-019-51
8-729-019-51
1-202-933-61
1-810-974-11
The above parts should be replaced as a set.
Always check HOT circuit before repairing power supply.
Resolder horizontal drive transformer and do a good visual check in that
area.
Check Vertical output IC for shorts or signs of overheating
Dang goodluck t8872695@xxxxxxxxxxxxx
----- Original Message -----
From: <Hermantvr@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, May 02, 2002 8:51 AM
Subject: [TechAssist] Sony KV27S25 Chassis SCC-J71B-A Dead Set
> Don't do a lot of Sony...looking for tips. Dead Set...Q601 & Q602 Shorted.
> R607 (.1 ohm fusible resistor is open. My question is after replacing the
> obvious is there any parts that usually go along with this. I noticed
that
> Q601 & Q602 are on the secondary of T603, however they are fed from the
> Bridge itself. IC643 is on the primary side of T603...just wondering does
> that usually need to be replaced when Q601 and 602 are replaced. Also
VDR601
> is appears to be some type of Voltage dependent resistor. Any tips on this
> unit will be appreciated.
> Thanks...
> Tommy Herman
> Herman TV ...Taylorsville NC
>
>
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