Sharp LC32D44E-BK Stuck in standby mode

[ron77]

Re: Sharp LC32D44E-BK Stuck in standby mode

Yes Tom, but he did mention that he keeps tv running by shorting c7558, indicating a fault condition. The most difficult of the 3 sets I repaired starts off white, now. Shorting c7558 was a good tip, didn't use it because when backlights went off, knew I still had a fault. Still own two of those tv's, one in a spare room, one we use as a loan. My main point was similar fault, think backlight problem in panel. Ron.

[lalunatech]

Re: Sharp LC32D44E-BK Stuck in standby mode

...All 3 turned out to be faulty panel only. One of them came on exactly as yours, pink to start, then white. Had spare psu and main boards, didn't need them.Also had spare tv I bought for 50 pounds. That came in usefull, had cracked screen, hence the price. Before you start spending money, check connetions etc. in the panel. The one with fault like yours was well used and dirty inside the panel. One tip, I ran chassis upside down with lamps exposed until I had nailed it. All 3 are now running, no backlight problems. .....

Thanks for the help. Do you mean all 3 were faulty LCD panel and were fixed just by cleaning contacts on the tubes. I don't think mine has one faulty tube because the brightness is very uniform. If I have to replace the lot, the tubes alone would cost £22 * 10 = £220!

[lalunatech]

Re: Sharp LC32D44E-BK Stuck in standby mode

The bulbs on these TVs normally run pink on start. They are very low mercury bulbs, due to environmental restrictions, but as such, have a shorter life. If the TV isn't flickering and there are no dim bars, I would leave it as is.

Cheers for the useful info. It is not flickering and looks good when warmed up but it is a repair for a customer so I can't send it back with C7558 shorted out to disable the fault detection, it may set fire to his house!

[Jahson]

Re: Sharp LC32D44E-BK Stuck in standby mode

Try changing the CCFL's around, see if you notice any changes.

[ron77]

Re: Sharp LC32D44E-BK Stuck in standby mode

I will explain as simply as I can. Had 3 sharp tv's to repair. Two I owned, one was a repair for somebody else. All 3 going to standby. The tv I bought, screen damaged, but backlights came on perfectly. So fitted backlight assembly, that was ok, to tv had for repair. Worked perfectly, job done. I gathered, without doubt, important info, knew where fault was. Also knew, had 3 faulty backlight assemblies on my hands. I needed to repair 2 of them. I did so, but no dim bars on either assembly. Had 10 spare lamps. Started next set. Tried changing lamps, but no real cure. So went for connections, and resoldered the 2 small boards in backlight assembly. After a lot of elbow grease did effect a permanent cure. At one point, thought of soldering lamp connections but thought better of it. Having gone over this work, reckon you might get away with just improving connections. Have been a professional engineer for over 4 decades. Am not a beginner, and I have told you how I proceeded. I would like to be more precise, but what I can say is all 3 sets are working perfectly. I will help more if you need it. Ron77

[Jahson]

Re: Sharp LC32D44E-BK Stuck in standby mode

How about this for parts and a few CCFL :> http://www.ebay.co.uk/itm/Sharp-LC-3...item2c6d21096d

Wish this was on last week

[ron77]

Re: Sharp LC32D44E-BK Stuck in standby mode

Jahson.

As long as lcd panel not taken apart you will have spare CCFL's. If screen ok, could go for more than a couple of pounds. Communicate with seller. You know what you want, as long as you get it, at right price,then ok. That service mode is on screen tells you a lot. The set I bought had accidental screen damage, and otherwise in good condition. I still have 10 ccfl's, if you get stuck, I can help you out with a couple. Ron 77.

[Jahson]

Re: Sharp LC32D44E-BK Stuck in standby mode

Ron77 my tv is fixed, i replaced 1 ccfl, problem solved.
Im just saying if this was on sell last week, sure it would of been a cheaper option than £34.04 i paid for the 1 ccfl.

But i thinking ive got that tv here, so i can test all i need to test. Think it will go for a few pounds.

If i did get it then i know i can ask you for a few bits if needed then?

[ron77]

Re: Sharp LC32D44E-BK Stuck in standby mode

Understand, didn't read thread thoroughly. Only looked at last page to start with. Saw dan's post and knew had similar problem. I will help if you need it. So you actually paid that much for a ccfl. Would have sent you a couple for nothing. Ron.

[titaniva]

Re: Sharp LC32D44E-BK Stuck in standby mode

Hi, I have the same problem i want to buy a C7558 0.47uF SMD cap on eBay. what is the voltage (V) of that. Thanks

[tom66]

Re: Sharp LC32D44E-BK Stuck in standby mode

You don't need to replace that cap, but if you really insist, any rating above 16V ought to work.

[titaniva]

Re: Sharp LC32D44E-BK Stuck in standby mode

Thanks a lot, What can I do? Bridge

[tom66]

Re: Sharp LC32D44E-BK Stuck in standby mode

It is a possible fix but doesn't work for all sets. After doing it you need to do a service lamp reset.

[titaniva]

Re: Sharp LC32D44E-BK Stuck in standby mode

thanks i will check

[titaniva]

Re: Sharp LC32D44E-BK Stuck in standby mode

what is the reason of these pictures

[titaniva]

Re: Sharp LC32D44E-BK Stuck in standby mode

How much is that the lamp? and where can i buy?
thanks

[tom66]

Re: Sharp LC32D44E-BK Stuck in standby mode

Looks like the lamp wasn't making good contact with the connector, does the lamp appear undamaged? Also possible that the frame touched the board and caused an arc.

[titaniva]

Re: Sharp LC32D44E-BK Stuck in standby mode

what is the solution? that part was a little darker than others the tv works but the smell is not good.

[vinceroger69]

Re: Sharp LC32D44E-BK Stuck in standby mode

is there a part number on that lamp cicuit board?

[titaniva]

Re: Sharp LC32D44E-BK Stuck in standby mode

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