Question about Hitachi 43FDX15B 43" Rear Projection Television
SOURCE: hitachi 51f500 magic focus
convergance amp ic bad
Posted on Dec 17, 2007
SOURCE: Magic Focus does not work.
Convergence issues usually resolved by changing convergence output amplifier IC's.....Original STK392-110 should be replaced
with upgrade Stk394-160E Hitachi part # CZ 01341,change both
for reliability.....check B+ feed resistors for over-heating....T.
Posted on Feb 04, 2008
Your problem is the convergence circuit. This is very common in CRT projection sets like yours. There are a couple of IC's that need to be changed and possibly some resistors. A good repair shop will run you $400-$500 to do the repair.
Posted on Oct 28, 2008
The magic focus will stop if there is a bad sensor and or a problem in the convergence circuit.
This set uses two STK-392-110 convergence chips--both along with any of the resistors that protect them need to be replaced and the set adjusted--I have repaired hundreds of these sets----
Confirm model number----and if you go into the customer menu and either red or blue will not move in any or some direction--the chips have to be replaced---LET ME KNOW WHAT YOU FIND AND I CAN GIVE YOU FAIRLY DETAILED INSTRUCTIONS ON WHERE TO GET THE PARTS AND WHAT IS INVOLVED IN THIS REPAIR.
I am here to help people--
REGARDS, SD TECH
Posted on Oct 02, 2009
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