[TechAssist] Re: Sony KP61XBR38 repeat STK converg. IC failure
- From: Gerald Gann <alpha21century@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 7 Oct 2004 07:47:00 -0700 (PDT)
Larry had this happen once on a Sony Projo. When my tech replace the STK?s
he had to chisel them off with a small screwdriver and gouged a grove in the
aluminum chousing a burr. Lasted 3 months. When changing STK?s again he
realized what he did. Filed off the burr reapplied heat sink compound, it has
been a year and a half now no problem. poor heatsink thermal
Jerry
Alpha 21 Electronics
Granite City, IL 62040
Ph. 618-452-8620
Fax 618-876-5157
www.alpha21century@xxxxxxxxxxxxx
tvtech <tvtech@xxxxxxxxxxxxx> wrote:
check the caps there ususally yellow and small 1 micro 50 volts
good luck
pete
----- Original Message -----
From: "Shoreline Electronics"
To:
Sent: Thursday, October 07, 2004 9:31 AM
Subject: [TechAssist] Re: Sony KP61XBR38 repeat STK converg. IC failure
> Probably just a bad batch of STKS...or poor heatsink thermal transfer.
> They
> do run quite hot
>
> =================================
> Jeff Stielau
> Shoreline Electronics Repair
> 344 East Main Street
> Clinton,CT 06413
> (860)399-1861
> (860)664-3535 FAX
> jstielau@xxxxxxxx
> =================================
> ----- Original Message -----
> From: "Larry E"
> To:
> Sent: Thursday, October 07, 2004 10:16 AM
> Subject: [TechAssist] Sony KP61XBR38 repeat STK converg. IC failure
>
>
>> Hi Guys, Went out on this Sony projo yesterday, customer showed me
>> receipts that
>> she has had the STK4278`s changed twice in this set almost exactly one
>> year apart,
>> picture has the usual vertical bow and misconvergence. I checked my
>> notes and have
>> nothing on this set for repeat convergence problems, all the resistors
>> check good,
>> solder is good on bottom of board, no dark burnt areas on the board, The
>> only thing
>> I can see wrong is the price the shop in Tennessee charged her for the
>> STK`s one
>> year ago, $32.00 each, this seems a very low price for OEM Sony parts so
>> they
>> might be generics and there just not holding up???? Anybody got any tips
>> or prior
>> experience with this problem ? tia, Larry E
>> Larry Eastman
>> American TV & Electronics
>> Crystal River, Fl. 34428
>>
>>
>> -----------------------------------------------------------------------------
>> Lost Password:
>> http://www.tech-assist.org and select "Login Problems?".
>> Email Archives:
>> //www.freelists.org/archives/techassist/
>>
>
>
> -----------------------------------------------------------------------------
> Lost Password:
> http://www.tech-assist.org and select "Login Problems?".
> Email Archives:
> //www.freelists.org/archives/techassist/
>
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
