Looking for schematic of Hitachi 43FDX01B TV- 18 pin transistor
I have a Hitachi 43FDX01B rear projection TV. it was in the middle of being repaired. no more repair guys. the tech removed two large (18 pin) transistors on a large heat sink. (large amplifiers?) i want to locate the parts and install them myself, but i don't have the parts and don't have a schematic.
how can i locate the parts? their name/number? any suggestions? thanks, Michael
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According to the system the problem in your projection is convergence and the solution is to replace the IC STK's.The part Number is CZ01341. Change the IC STK both and your TV work fine again.And for parts please see the link below.
It's probably either a bad red CRT (the red projection tube) or a shorted (or open) driver transistor on the red CRT driver board. If it's the latter case (bad transistor), it can be fixed. If it's the picture tube, well, it's probably time to go shopping for a new TV. Do you need more information? Do you want to fix it yourself? Do you have electronics knowledge and experience? If not, call a qualified electronic technician (TV repairman), and he can tell you if it's the picture tube or not.
IF (and only if) you are a competant electronic technician, CAREFULLY check and compare the voltage on the collector of the driver transistor on the 3 CRT boards. (The driver transistor is the large one, possibly connected to a heat sink.) The voltages shoud be somewhere around 140 to 160 volts. If the red one is significantly different from the green and blue ones, then it's probably the transistor. Unplug the set (and wait a bit), and check the transistor with a diode or transistor checker. If it checks bad, then you found a bad transistor. Go to NTE Electronic's website to find a replacement. If it checks OK, then you're probably looking at bad (shorted) red CRT.
Try adjusting the convergence. If it won't move see below- (or hitting Magic Focus for some Hitachi’s) This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks! See link for more detail http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html
Convergence IC's must be changed to start repair..original...
STK392-110 sub to Hitachi upgrade STK394-160E.....PART #
CZ 01341...you need two....
Next, take a critical look at the B+ feed resistors near the IC's..
check for over-heat / damage......usually 2.2 ohm 2 watt......
Let me know....................T.