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Sharp LC-42DH77E

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OldLes:
I see it is March since I last played with this set (LC-42DH77E). In spite of bodge repairs I never got beyond briefly seeing which lamps NO LONGER light.
Having read the "Shuts_down_lamp_error" pdf, next move is to put a S/C on C7558. Different location of C7558 on this set from that shown in the document. S/C link fitted, switch on set. Flashing red LED, unlike previous condition. Have they changed the "prevent shut down capacitor"? Is it a different component number in this set? Beautiful looking set, would be perfect for my living room, but I can see it being consigned back to scrap. Any comments?

OldLes:
Maybe the last message is not very clear. I am attaching the Sharp bulletin concerning shorting C7558, which is shown on the second page. C7558 on my set is much nearer to the IC than that shown.
Of course if I had a circuit of the inverter, it could make more sense, but that seems to be absent from most circuits, so you are left in the dark.
Any suggestions welcomed.
Les.

Turnip:
Hi Old Les,

General opinion is that the tubes are usually OK on this model but edge connectors are suspect, as can be seen by the burn marks on those plastic connectors and the burned holes in the inverter panel.

Just hard wire and do a reset - nice telly - All the best - Old Chris.

OldLes:
Hi Turnip (sorry, Old Chris) and Kilroys. Decision already made on next step before reading your message Chris. This afternoon, another Monday, so with my pal we hauled it back onto the kitchen table. Inverter board out, up to electronics room, and remove last week's incorrect short. Of course the SM cap came out as well, so it took a good half hour before that was back to standard. After locating C7561, I managed to solder on a single strand from a thin wire to short it out. Again, quite a time consuming task. I worked under my 10 Xs Stereo microscope, with the finest tip iron in my armoury. Glasses and Ledu for getting things ready, glasses off and microscope to do the job. I think back 25 to 30 years when I routinely replaced up to 10 diodes on some earlier Grundig CTVs, and about 5 little black 0.1 caps on their Tuner-IF boards. It would not be profitable today with these "smaller than ever" components.
But what happened? We failed to get to the "K" screen, but this time we did see ATV 54, suggesting it had been last used on analogue "commercial", before it went to standby. And about half to one third of the CCFLs not lit!
So, it is to be the front off next time, and EVERY CCFL will be re-tested, and then individually hard wired Chris's way. I think the best method will be to use enamelled copper, well scraped, and fitted in Thorn's "tie wrap" mode.
Believe it or not, I am optimistic that sometime in the near future, I will have this set in my living room. I bought my current LCD, an EVOTEL, just over three years ago (my first new set since my 22" NordMende back in 1970, and only £15 more expensive!!!), so I guess that will be packing in before to long.
Les.

Turnip:
Hi Young Les,

Took the front off meself feeling tubes were the problem, well, it's a Sharp, and we know 'em.

Naturally they were OK of course. But go for it, I did, but was freaked with the possibilty of disaster.

Mine was a customer jobby, and the inverter hard wire did the job - Not a 'kind word' or 'refund' since.

Made the needy pound though - Old Chris.

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