require help to diagnose telly fault

require help to diagnose telly fault

Author
Discussion

Mech Tech RAF

Original Poster:

90 posts

128 months

Sunday 21st December 2014
quotequote all
evening chaps, my trusty telly has just thrown a wobbly on me and is refusing to come on.

currently its just sat there with the power indicatore flashing/blinking repeatedly.

the preceeding usage was as per usual, an output for my laptop which I was using to listen to some music. I turned it onto the powersaver mode (screen off but still outputs the audio) but when I went to get the picture back it made a repeated very faint buzzing sound from the back of the telly itself and went intk its current state of doing the usual red power light flashing; but instead of then coming on, it loops through the flashing/blinking cylce ad infinitum.

just bought a house so pretty skint at the minute so a cheap fix is desired if possible.. and also it has a lovely picture when working so another set isnt wanted tbh.

the telly itself is an lg 37LH5000 - ZB.BEKVLJG serial no. 910WRVZ8E431



Any and all help is very much appreciated chaps and beers can be awarded accordingly lol :-)


John

esuuv

1,318 posts

205 months

Sunday 21st December 2014
quotequote all
unplug it - give it 2 mins and plug it back in? [/itcrowd]


TheEnd

15,370 posts

188 months

Sunday 21st December 2014
quotequote all
Probably an electrolytic capacitor-
http://badcaps.net/

Mech Tech RAF

Original Poster:

90 posts

128 months

Sunday 21st December 2014
quotequote all
tried the ol' off and on again number on it (usually works on the planes i work on so figured it was worth a punt lol, but no such luck :-(

give me a minute and i'll check that link :-)



cheers for the quick replies btw fellas lol, obviously also insomniacs or shift workers :-p

John

paolow

3,208 posts

258 months

Sunday 21st December 2014
quotequote all
TheEnd said:
Probably an electrolytic capacitor-
http://badcaps.net/
100% this - my own TV has died the same way and after a bit of research this is almost certainly the issue

Mech Tech RAF

Original Poster:

90 posts

128 months

Sunday 21st December 2014
quotequote all
paolow said:
100% this - my own TV has died the same way and after a bit of research this is almost certainly the issue
so i'm assuming i have to take it to bits and look for anything physically 'iffy'?

how easy would it be to change one of those capacitors if that is whats wrong? bearing in mind im a mechanical technician by trade and only have a vague (very vague) understanding of how to go about electronics repairs....


John

Mech Tech RAF

Original Poster:

90 posts

128 months

Sunday 21st December 2014
quotequote all
bit more history actually....

the telly developed a habit of being slightly un-user-friendly when turned on if left switched off for 12 hrs or more (give or take)...

manifested itself as the top part of the screen being flickery and the picture freezing, not unlike when windows 'hangs' if doing a big task etc. but would gradually get better after ten minutes or so...


John

Le TVR

3,092 posts

251 months

Monday 22nd December 2014
quotequote all
A lot of TVs use the system of flashing the power/standby LED a certain number of times as a diagnostic aid. They usually flash n times and then repeat.
Find out if there is a diagnostic code available for you set, it will tell you where the fault is.

Mech Tech RAF

Original Poster:

90 posts

128 months

Thursday 25th December 2014
quotequote all
had a goosey gander on t'interweb and can't seem to find a list for the flashing codes for my telly :-s found one for a totally different set but not much use lol!

John