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I have a 62HM84 Toshiba TV. I lost picture on my TV in the past i have bought the lamps and i just put it on and the picture comes on. This time when i replaced the lamp nothing happens no picture. It tries 8 times to turn on, but nothing happens. Can you help me with is what is the problem.
The buzzing is the ballast arc gap,normal sound. When the tv starts does the lamp start to come on. Can you see any light from the back? Sounds like bad ballast. Unfortunatly this part is no longer available. the light engine will have to be removed and sent to Toshiba to be rebuilt.
Ur high voltage FBT,is dead the block of plastic with a red wire with a cap hook to the CRT(tv tube).Might also have to replace the whole power board?Because just couple parts it hard to determins,what else also ready to burn next!
i have had this problem on one of my tv s all i did was remove the back of the tv and re-solder all the joints around the tuner (thats where the arieal goes) they go with time because the joints there get so hot . hope this helps
I hope you can help me.. I own a Samsung DLP TV model no. HL56A650C1F, 56". The problem I am having is that it just turns off by itself and lights "stand by" and "lamp" are flashing at same time.Sometimes, when I'm trying to turn it on- it shuts off by it self.
This is a common problem that shops see every day... Due to the age, size and ultimately the heat this unit generates in several of the component areas it has developed ring cracks in one or more areas. The likely suspects are the convergence amps - this unit uses two STK392-110 Sanyo built amps mounted on a large aluminum heat sink. Or it coud be the vertical Ic, which in your unit is a LA7833 mounted on a smaller heat sink.
You'll have to remove the boards enough to look underneath and see where these components mount to the foil side of the PC board. If you inspect closely enough (get your reading glasses) you should be able to spot one or more of the pins in either of these two areas that are ring cracked. Simply re-flow a little solder on those pins and put it back together...
If any of this sounds too complicated call around and ask what a shop charges to comeout and solve this kind of problem (ring-cracking) causing intermittent picture loss. It shouldn't be costly.