LG Plasma fuse blown.

[Scottmac]

G'day to all from the top end of Australia. First post, I hope somebody can give me some advice.

My TV died last night. It is an LG 50PT250 Plasma. I have traced the problem to a fuse on the PSU card. The fuse is a 5A soldered into the card.
Can't see any other burnt out or damaged components on any of the cards.

Where can I source another fuse to suit?
Do they blow for no reason occasionally, or is it likely there will be further problems down the line?
I have sourced a new PSU board on eBay for 80 bucks, should I just get that?

Also when I checked for voltage at the outlet it was 250v. Shouldn't be that high.Nominal voltage here is 240Vac. (I'm an electrician). It was checked on a cheap meter I keep in my boat, so maybe not real accurate.
Is 250vac high enough to start damaging electronic components?

Cheers for any advice, Scotty.

[tom66]

Re: LG Plasma fuse blown.

Fuses -rarely- blow without obvious cause. That's not to say it doesn't happen, but it is very rare.

You can try testing some other parts if you have a multimeter. Otherwise replacing the power board ought to fix the fault.

[selldoor]

Re: LG Plasma fuse blown.

Perhaps the battery is going in your meter - that might account for the 250v reading.

[tom66]

Re: LG Plasma fuse blown.

250V is ok for most 230V devices, including TVs. Up to 253V is ok in a 230V/240V nominal country, devices are tested to 265V.

[Scottmac]

Re: LG Plasma fuse blown.

Thanks for the replies guys. I have ordered the new PSU and will check out the old one as time allows, although there isn't any obvious damage to the caps etc.