[TechAssist] Re: Samsung PCH521R Convergence problem
- From: <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 12 Nov 2003 16:26:28 -0600
Try powering up with new fuse and all convergence yokes unplugged
Does it still blow fuse ?
If not turn off and reconnect 1 yoke at a time
May have coolant leak around blue tube/yoke
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
Dallas, TX
----- Original Message -----
From: <jhoeme@xxxxxxxxxxxxx>
To: "Techassist" <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, November 12, 2003 3:42 PM
Subject: [TechAssist] Samsung PCH521R Convergence problem
> This PTV came in with severe convergence problem. Heatsink for the three
convergence IC's was cold. Found fuse F855 blown. It supplies the
convergence board with -26V. Replaced fuse and all three IC's (STK 391-020).
Powered up and instantly blew the fuse again. Have checked both neg and pos
26V loads for shorts, found none. Checked all three convergence yokes, all
read about 1 ohm. The neg and pos 26V supplies only feed the three IC's.
Have checked all caps on both supplies, OK.
> Any ideas?
> TIA
>
> Jerry Hoeme
> Jerry's TV Service (Estab. 1978)
> 840 S. Kansas Ave
> Liberal, KS 67901
> jhoeme@xxxxxxxxxxxxx
> For Professional Techs only
>
****************************************************************************
*
> 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: