Question about Toshiba TheaterWide 50HP16 50 in. Plasma HDTV
Toshiba 50HP16 has no picture or sound. Power is cycling on and off every few seconds. When on, +5 volt is on pin 11 of CP3201 on Scaler Board and 3.3 volts is measured at pin 2 of IC3804 on the AV PCB. When cycling on, D15 lights then D17 followed by D01 on the CTRL-LVDS board. Troubleshooting Guide recommends replacing Scaler Board but I would like to make more measurements. Any recommendations?
Toshiba 50hp16 has a flashing screen,like someone taking a picture with a flash.sound is Ok.Only 3 yrs old
Posted on Oct 06, 2009
Check mosfet at Q104 2SK2370 which will sub to an Nte2970 on the main power supply. Leakage can cause cycling but my bet is on the scaler board also. You say you have +5v at pin 11 of CP3201 and 3.3 at pin 2 of IC3804 - and all the troubleshooting charts and schematics I've reviewed suggest replacing the scaler board, Toshiba p/n# 72784101 and unfortunately they're about $240.00 dollars. But that sounds like the problem to me...
Posted on Dec 01, 2007
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Posted on Jan 02, 2017
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