Question about Hitachi 60UX54B/55K 60" Rear Projection Television
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Posted on Jan 02, 2017
SOURCE: Hitachi 50ux58b
It's possible that the Convergence IC's are causing a shutdown of the power supply. Also on this model, there have been problems with: C707 - 1000pf @ 2kv Cermaic Disc Cap (normally a small blue one) Hitachi Part # 0244211. I901 - A STRM6811a Reg Ic and E994 - 2.0 Amp Circuit Protector (Pico Fuse) having a high failure rate. If the 2 amp pico fuse was good, and the capacitor looked OK, then I would check the convergence circuit board. There are many other parts that can also cause shutdown problems, however.
Posted on Jan 03, 2007
SOURCE: Hitachi 50EX20B Bigscreen TV
You can download a PDF from here: http://www.servicemanuals.net/results.aspx?type=SM&brand=0&model=50EX20B Make sure that the coolant is not leaking out onto the printed circuit boards. i have had the remote sensor cause this problem before and also I have had bad capacitors in the sweep and the main power supplies. Good Luck
Posted on Jun 14, 2007
If cap value is 1000 pf ( 102k ) 2KV, beef it up ! I use Sony part # 1-161-754-00 ....102k 3KV.......Note: sometimes shorted cap
is hiding under dried gob of placement glue............
Make sure pico fuse is correct amperage.......T.
Posted on Jan 29, 2008
Good Day, Gil;
Your problem is in deflection circuit (115+v) check these: FP05, DP15, Q777, QH01, TH01, T701, etc. BUT suspect C707 1k pfd, 2kv, and check all the pico fuses (brown) 2" to the right of cap. Good Luck, big IRISH.
Posted on Sep 01, 2008
The 392-150 is a higher current device then the 110---you can use either--this is normal in the hitachi sets---I usually replace both with 150's---check the led that does not light---should indicate which voltage source is bad---if it is one of the 2 voltages for the convergence ic's(one is a positive and the other a negative voltage) then the convergence Ic's may be bad---look for any discolored resistors around the ic's---one way to tell if it is a convergence ic is to de-solder both ic's and see if the set turns on(the convergence will be out the window) but if it comes on change both and do the alignments with the Hitachi remote. By the way----the led should have a location number printed on the top of the circuit board.
Posted on Aug 07, 2009
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