Sharp LC-42XD10E switches off.

[Davy]

As soon as you power on the red led goes to green then it trips off with a clunk, this is obviously the relay and a 'thump' from the audio section, to get it back on you have to disconnect the plug.

Just wondering if there are any tips available or voltage checks, since the boards do not carry any markings voltage or otherwise... just wondering if it could be the inverter since the back light doesn't get the chance to come on.

Dave

[jordan]

Replace inverter board

[sparky]

hi
YET why do you fell terrible

[Davy]

Thanks jordan.... yep I was suspecting that.

Sorry to the other poster I just ignore stupid comments!

Edit:
Just realized it's a spammer... see signature!

Dave

[faflefevre]

got the same make and model tv..sharp lc-42xd10e...mine when powered i get the red led when i press standby via remote the led turns from red to green and back to red..you can hear the relay click thats all that happens appears to be in the protection mode....in the past when i have had inverter board fault..you can dissconnect plug to inverter pcb and led will stay green but not in this case...thanks in advance for any help with this one

[Davy]

Thanks for the info faflefevre, every little helps. I had the impression it was going protect mode. I was hoping on some 'knack' on by-passing it, the whole thing 'appears' trip just before the back light has fired, guessing as jordan the previous poster said.

I must try and get the service info.... if only they were all like the old fashioned Grundigs when they tucked a circuit diagram on the inside - going back a bit, can't have it too easy though!

Dave

[faflefevre]

ok i took the plunge last week and bought a power supply via fleabay..and it didnt cure my fault so now have a spare power supply.......so maybe my fault is the inverter board also....if you buy an inverter board and it doesnt cure your fault let me no and i maybe intrested in buying it from you..

[jordan]

At Sharp machines, when he is inverter in breakdown, he is possible to start up them with procedure,that on head-on plate of a machine at the same time restrain button V- and button INPUT. A machine starts like this and service menu writes out,where in section of ERROR see from where springs up mistake

[scooby-doo]

I have had a couple of sharps and they turned out to be a fault with the main boards..nothing to do with inverter/psu....
like jordan mentioned pressing V- and input at the same time you need to unplug the tv from the mains then plug it back in whilst pressing the two buttons...must admit that everytime I have tried this with main board fault does nothing to boot the tv up to clear errors.
Butt you may be lucky and you can boot up.
If it does flick through about 5 pages unitl you see EER and EER B and clear them

[sparky]

hi
try and test the ccfl tubes they can cause this fault
you need a zippy tester
the tubes just fail
dave

[scooby-doo]

thinking about it wasnt it this model Sharp that had the trapped wire...I am sure i have seen a service bulletin on this site about it

[Davy]

Tried the button trick to no avail.... gotta be in protection mode good and proper, Is there a way to disconnect the protect line?

Wouldn't be half as bad if the boards connectors were marked.  Not heard from the guy, rang several times. Sticking new boards in is fine and dandy but you don't want be doing that if the CCFLs fizzle out a week later, they ought to be tested should it came to that.... Waiting for an identical set so we could try a swap first could take a month of Sundays or never!

Dave