Question about Hitachi 51F59 51" HDTV Projection Television

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50sbx70b made sizzling noise then quit

I have a 50sbx70b and it quit operating. No lights or sounds. I checked in back and unplugged and i get indicator lights on the circuit board. When the power switch is pressed on after about 5 seconds the lights go off and I have to reset by pulling the power plug. Appreciate any help.

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  • Hitachi Master
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Sizzle cound be crt arching or hv transformer. look for burn marks on transformer on deflection board. unplug set and remove crt boards from the crts and see if set will turn on. if replace arching crt. expensive. not to be attempted by amature.

Posted on Aug 29, 2009

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When turning on the machine it makes a sizzling noise


"Sizzling noise" does not sound good! Your description makes me think of the sound of electronical short. Unplug it and don't run it again until you've taken it to a repair shop who can look at it. It's also possible, though the sound is different than a sizzling sound, that there's a capacitor or other electronic part going out on it. Anyway you look at it a sewing machine should not be making any strange noises like that!

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Sony KDP-51WS6755 not turning on, power surge, pop, 6 blinks.


unplug it immediately. never tolerate a sizzle (frying noise) or a popping noise. do NOT replug. fire hazard.
contact serviceman for repairs. Sears Home Service can handle this for you.

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My Alpine Air 880 makes a sizzling noise. I turn the dial down and it gets better. Whats the problem?


The sizzling is the high voltage "bleeding" to ground inside of the collector module, or the high voltage electronic circuit.

First, unplug the unit and remove the module. Thoroughly clean all electrical contact points where the module makes connection. If it possible to operate the unit without the module in place, then replace all covers, plug the unit in, and attempt operation. If you continue to hear sizzling, then unplug the unit, remove covers, and continue to clean, digging deeper into the unit to find traces of accumulated dust/dirt. Also be on the lookout for burned areas in the plastic, around insulators, etc. High voltage is a mighty beast, and will easily track to ground, causing a sizzling noise.
If you don't find anything there, then take the modele and look for any tracking points on the insulators. Look very closely at the ionizer wires for accumulated lint, which creates little points where high voltage can bleed to ground from.
You may get popping of high voltage as well. When this happens, note the places where it occurs, and those places become suspect of causing the sizzling sounds.
Let me know what you find. These guys are cantanckerous at best.

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1 Answer

Projection tv not working


I guess loud sizzling was from High Voltage Splitter in your TV. HV seems cracked and leaking high voltage.

You can observe and confirm it by removing back cover and power up TV from distance and check at rear of TV. Please take care and there should be little dark to observe arc from HV splitter.

If this is the case, HV splitter available in Part Store.

Dec 16, 2008 | Televison & Video

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TV made a loud popping sound and quit working


Bad IHVT ( transformer ) = Part # 239111 use original only, no cheap subs !...............T.

Oct 02, 2008 | Proscan PS50700 50" Rear Projection...

1 Answer

Need help


If the green lites on bord lites up doesnt mean it is ok. If you check on that board in the middle at the back of the heatsink in the middle, there is two lights, green lights that is not lighting up. If i am wright. You have caps an a transistor on your powersup that is shorted. Take to somebody to fix powersupply.

Jan 24, 2008 | Hitachi 50SBX70B 50" Rear Projection...

1 Answer

I have a hitachi 50sbx70b


sounds like either a tube is arcing or h.o.t is arcing.

Nov 12, 2007 | Hitachi 50SBX70B 50" Rear Projection...

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