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Equipment Repairs => LCD TV forum => Topic started by: astracat on August 16, 2010,16:55:13

Title: alba alcd15dvd1
Post by: astracat on August 16, 2010,16:55:13

hi all
have above tv with backlight tripping on switch on, think its the psu at fault does anyone know how to dismantle this seperate psu without wrecking it as its not screwed together,or has anyone had dealings with model any help is appreciated
thanx for looking
astracats

Title: Re: alba alcd15dvd1
Post by: Turnip on August 18, 2010,12:47:56

Hi - A'Cats,

Guess this might be a Beko with in-line PS. Check Wiltsgrove - pretty cheap these days - £8.95 + Vat.
All the best -   Chris.

Title: Re: alba alcd15dvd1
Post by: astracat on August 18, 2010,16:18:59

hi and thanx turnip for info, have now tried another psu to no avail looks like inverter causeing problem as 24v on inverer with turn on power stopping on probably transformer causeing fault or maybe 1k caps across lamps or maybe new inverter .cust wont pay above 50 for r/p so poss right off
astracats

Title: Re: alba alcd15dvd1
Post by: Turnip on August 19, 2010,13:21:59

Hi,

Yes, but -

You're now talking 24v - not usually the biz with small screen tellies. Now Wiltsgrove does the 24v version as well, pound or two more, but on a small screen - I doubt it , what's the invertor  ?  - Chris.

Title: Re: alba alcd15dvd1
Post by: astracat on August 19, 2010,17:42:35

hi
turnip sorry typo error should say 12v on inverter with 3v on turn on connection both stay on when fault present but no power on lamps

astracat

Title: Re: alba alcd15dvd1
Post by: chrissie jones on August 20, 2010,02:39:00

sounds like the 12v is missing to the inverter.

Title: Re: alba alcd15dvd1
Post by: Turnip on August 20, 2010,12:50:37

Hi A/Cat,

As I have nothing on your actual model but guessed it might be like the DVD-less version that had a Beko mainboard, attach my file as this model had mainboard Buck convertor probs.

All the best - Chris.

Title: Re: alba alcd15dvd1
Post by: astracat on August 20, 2010,15:48:17

hi turnip
thanx for that ,now changed one of inverter tx now up and running on test,
tx from a small monitor so time will tell if reliable
astracat

Title: Re: alba alcd15dvd1
Post by: Turnip on August 23, 2010,12:54:34

Hi Cat,

Doesn't seem big enough for the more usual Darfon trannie probs we know so well - give a clue - Chris.