Re: LG 42PC1D - bad Caps or YSUS?

Ok, so the YSUS and Power board came back yesterday, I fitted them today and did the voltage check and the VS was 188 (186 on sticker) and VA was 62 (60). Adjusted both and the picture is fine no sparkles great picture and back to normal. I can take the 18" back up to the bedroom now!

Thanks to flocko and Tom66 for their input and advice, much appreciated.

If you are reading this as a result of having the same problem and need someone to solve it for you cheaper than the £95 plus £20 postage I paid, then pm me...

Re: LG 42PC1D - bad Caps or YSUS?

Roger D and I will make sure I can do that BEFORE I actually attempt it, I have seen the instructions on this site somewhere. The panel sticker (I think) says 186 (or was it 197) and 5.2 but cant recall, its all back together on the wall to cover up the hanger iaw forewoman's instructions ;-)

If I get stuck I will post in this thread...

Cheers

Steve B

Re: LG 42PC1D - bad Caps or YSUS?

Aye Flocko, got all that and you're right they are all 3300 x 10 volts and I was already happy with the ID, values, polarity and stuff but I didn't feel confident that I could tell if the +ve pin solder was supposed to contact the solder traces on the underside of the board or not. Some seemed to but others didn't? My readers (glasses) didn't fill me with enough confidence and I don't have a bench magnifier (yet).


Anyways, they are both in the post now and the postal difference was only 2 quid ! result... just need to see...

Re: LG 42PC1D - bad Caps or YSUS?

Cheers Tom and Flocko, the only thing that puts me off is if I fork out for the expensive repair and then screw up the power board I am up Sh*t creek with no paddle...

I realise I could save the tenner labour and 14 quid postage but what cost if the Power board then gets screwed... methinks I will practice on some old circuit board first then if this problem arises in the future then I can/might have a go.

I have just had a second look at the power board's underside and identified all the contacts that need desoldering....

Re: LG 42PC1D - bad Caps or YSUS?

Flocko, just carried out that ff check and sure enough the set stays powered up if the YSUS is unplugged. I have also just spoken to Raj at the service we spoke of and he is going to repair both boards; YSUS for £64.99 and Power for £20.00 including all parts, so about £100 with postage. Seems cheaper than a new telly!

thanks again for your help...

Steve B

Re: LG 42PC1D - bad Caps or YSUS?

Ok, cheers Flocko, I will take another look at it today and unplug the Y board - is there anything I should look for in particular? You said it should come out of standby but I seem to recall its doing that already but only for a few seconds before tripping off again. Are you suggesting that it should stay powered on (out of standby) and not trip if the YSUS is disconnected?

edit - thereby proving the YSUS is at fault?

thanks again ;-)

Steve B

Re: LG 42PC1D - bad Caps or YSUS?

Thanks Flocko, was reading your exploits on the site and what you say makes good sense! Is the service you mention LCD projector s ? if not can you tell me who you mean?

edit, meant to say I cant recall which fuse but I will reopen the set and check and do the fault finding you suggested...

Thanks for your response

Steve B

Re: LG 42PC1D - bad Caps or YSUS?

Thanks for the prompt response, so how would you conclude the caps 'will only cause problems in few more months'?

What if they have been bulging for years particularly if some of them are already showing signs of leakage - what difference will a few more months make and what is likely to be the manifestation of this 'problem' when it does occur?

Is the IPM, Hybrid and IC18 all the same component?

thanks again for your input

Hi to everyone, this will be my first post.. my name is Steve and I live in Hampshire, UK and I have been lurking for a few days and reading lots about my possible problem and its solution but I am a little doubtful as to the actual failure point of my 7 year old TV.

It is probably worth mentioning that about 5 years ago (ish) it did suffer from sparkles (red) at the top and bottom of my TV and after having read about it on the net, I adjusted one of the two pots on the board BUT I used the picture quality as a basis for the setting NOT any voltage reading as that was not mentioned...