[colug-432] Mo' bulged electrolytic capacitors: Westinghouse LCD Monitor/TV, circa '06

Joshua Kramer josh at globalherald.net
Mon May 31 16:54:38 EDT 2010

Funny thing that.  I have an HP 19" monitor with the same problem, when 
I get around to driving to Colubus I'm going to get a few caps to 
replace the bad ones.

Oddly enough, I also have a 17" Sylvania monitor that the power supply 
board is dead, but NONE of the caps are bulged or look bad in any way.

On 05/31/2010 04:03 PM, jep200404 wrote:
> The plague continues.
> This time it a Westinghouse LCD monitor/TV, apparently made in 2006.
> Nominal Measured[1]
> 1000 µF 356 µF
> 1000 µF 289 µF
>   220 µF 427 pF
>   220 µF 537 pF
> This time the symptoms were a backlight that would not turn on,
> and when the when the power was plugged in,
> I could hear high frequency squealing for a while.
> Also, if the backlight brightness was reduced,
> it would flicker erratically and there was squealing
> corresponding to the flicker. So I thought,
> Ahah! it must be related to the high voltage power supply
> (inverter) for the flourescent tube backlight,
> and that's where I found the bad caps.
> I replaced the four bulged caps. Now it works fine.
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