Question about Toshiba 36HFX72 36" TV
Anyone have a guestimate of what this problem could be, the TV picture does not come on, the red LED power light flashes (does not do this normally) when the tv is off & when I try to turn it on the light stays solid for 10-15 seconds then goes back to flashing & the tv does not turn on. Unplugging & plugging only makes it seem to turn on (regular turn-on noises) but picture (nor sound) never come on & LED power light returns to flashing. Toshiba support says it is probably a component on the main board. Any ideas problem/cost to fix?? Thx much
Posted by Anonymous on
Not sure right off bat, however unplug it from the wall for three or four minutes plug it back in it might reset it?
Posted on Apr 28, 2017
this symptom is usually caused by a breakdown in the power-supply circuit. in most modern receivers (transistorised and/or ic), it may also be caused by a breakdown in the horizontal deflection circuits (horizontal oscillator, pre-drive or drive circuits.). this is because the supply volatages for the tuner, video intermidiate frequency(VIF), video amplifier, sound intermediate frequency(SIF) and vertical output circuit are usually supplied by the horizontal output circuit. since you are not inclined with this kind of job, better bring it to a qualified tv technician. with regards to the cost of repair, i cannot tell you the price since my location is different from yours. but to give you and idea, here in philippines $100 is enough for this kind of trouble!
Posted on Feb 13, 2007
SOURCE: Toshiba 32A32 won't turn on
just fixed one with that problem it was the vertical output ic Q301
that was shorted. try wicking it out. it is a LA7833S.
Postings say to be sure to use the Toshiba part
Posted on Aug 28, 2008
during transportation your TV was suddenly shock. then causes your TV lose connection on main circuit board. trust me!
Posted on May 21, 2009
Same problem with mine. Relays click, sound, no picture and a flashing power LED. I finally found a schematic online. I went through the high voltage circuits and found the power transistor 2SC5570 was shorted out. There is also a pico fuse in that area but my was not open. I replaced the transistor and prayed the flyback transformer was not shorted. It wasn't, I'm watching my old 36" right now. Not a bad fix (17.00) bucks. Wonder what a service tech would have charged ;)
Posted on Jun 14, 2009
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