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Equipment Repairs => LCD TV forum => Topic started by: cheeky2 on December 12, 2011,06:59:26

Title: Bush LT32M1CA switching on and off intermittantly any ideas?
Post by: cheeky2 on December 12, 2011,06:59:26

Good morning :)
Recently purchased a Bush 32inch lcd tv model LT32M1CA and intermittantly it switches off and turns itself back on again! I have looked at the psu unit and no capacitors look expanded leaking etc. Anyone had similar experiences with this model (i believe Alba also do the same model rebranded!). Removed the manual buttons from the main board which makes no difference. I am hoping someone has come across this fault before?
Any suggestions welcome.
Thanks :)
P.S. Just about to check the output voltages from the psu.
P.P.S. Does anyone have the service manual for this model or now where i can download it?

Title: Re: Bush LT32M1CA switching on and off intermittantly any ideas?
Post by: cheeky2 on December 16, 2011,02:36:58

Well to answer my own post i successfully resolved the problem on the power supply by changing two electrolytic capacitors they were a 1000uFd 25V and a 470uFd 16V! I replaced them with uprated 35V and 25V capacitors (as these were ones i had handy).

 I have now put it back together so am not sure which denotations they were on the psu board. Luckily the voltages on the connectors were marked up on the board which gave me a lot of help in finding the fault.
 
Now all i am after is a stand and remote for it!
Have a good week and be lucky :)

 An update the caps changed didn't make any difference however i finally managed to trace the fault to a 220uf 35V electolytic 105c which seems to have cured the problem, only time will tell as i had on test for around 5hours before it started playing up....