[TechAssist] Samsung PCH521R Convergence problem
- From: <jhoeme@xxxxxxxxxxxxx>
- To: "Techassist" <techassist@xxxxxxxxxxxxx>
- Date: Wed, 12 Nov 2003 15:42:49 -0600
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
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