Element TV Proview board problem

[grtrunner02]

I'm new to the site and new to electronics repair in general. I picked up an element tv that would power on but the screen wouldn't turn on. I replaced the two 10uf450V caps on the proview board. The screen now turns on and I can play with the menu. My question is as soon as I plug the tv in I get a whistling sound. Also when you touch the top (opposite of the lead side) you get an electrical shock. Is that normal? Any Idea what the whine noise is? Any help would be great.

[selldoor]

Re: Element TV Proview board problem

Touch the top of what?? - Quite dangerous touching anything inside a TV of you dont know what you are doing!!
Whining whistling screeching could be capacitors -or lamps- try and establish where the sound comes from and turn down the brightness - see if that helps.

[cashkennedy]

Re: Element TV Proview board problem

Why did you replace the 2 450v caps? Were they blown / domed? Did you replace with caps for 450v or higher? Are any of the other capacitors on the power board leaking, or bulging, or domed?

Often a whistle noise comes out of capacitors that have blown / and are leaking. As selldoor said, try adjusting the brightness and see if the noise changes and try to tell where its comming from.

[grtrunner02]

Re: Element TV Proview board problem

@selldoor...I knew what i was touching. I'm not an expert in electronics but i knew there should not be electricity on the top of the cap (part that domes when bad). I guess i should have phrased it differently.


@cash I replaced the 2 caps (with the same size but panasonic brand) because they had a slightly domed. I do not see any others leaking. T?he tv works now just a faint whistle noise.


I re-soldered the new caps in and the electricity is no longer felt on top of the 2 replaced caps. still have a very faint whistle.