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Equipment Repairs => LCD TV forum => Topic started by: LEEDASH on January 25, 2013,14:41:13

Title: Onei 26av400
Post by: LEEDASH on January 25, 2013,14:41:13

hi all,i have this lcd 'onei' lcd tv,which is faulty,which just flashes its standby light.Any one know what could be at fault ?

Title: Re: Onei 26av400
Post by: LEEDASH on January 26, 2013,15:59:52

The vestel board number is 17pw26-4,if anyone has any info on this.

Title: Re: Onei 26av400
Post by: LEEDASH on January 26, 2013,16:59:30

(http://)

Title: Re: Onei 26av400
Post by: sparky on January 27, 2013,04:15:22

have you checked  anything yet
diodes etc

Title: Re: Onei 26av400
Post by: LEEDASH on January 27, 2013,05:58:59

Not yet would like a bit of advice on where to start,

Title: Re: Onei 26av400
Post by: t1412 on January 29, 2013,00:24:15

make sure when you start testing, either desolder one end of the resistor diode or take them out of the circuit, with capacitors and transistor it would be better to take them out good luck

regards
shaun   

Title: Re: Onei 26av400
Post by: LEEDASH on January 29, 2013,15:38:24

Has anyone had problems with these boards,i thought about changing the 'start up caps' c801 c892' one cap is 100uf 25v and the other is either a 3,3uf 50v 0r 33uf 50v,small writing on the cap ? can some one confirm which is right.

Title: Re: Onei 26av400
Post by: fix2003 on January 30, 2013,02:39:33

c801 is 33u 50v

Title: Re: Onei 26av400
Post by: LEEDASH on January 31, 2013,16:04:37

update,changed the two caps as last message i put up,no change,still getting flashing light and about 1 minute after the plug is pulled it still flashing ?
i wouldnt mind if someone has the info what cap does what,is this possible ?

Title: Re: Onei 26av400
Post by: WILLYAM1 on February 01, 2013,10:18:00

hi.
check if any short regulaturs in main board or very small resistance.
hade a tv with same p.s and power led blue was flickring.
i found that the HDMI IC IS SHORT.

Title: Re: Onei 26av400
Post by: LEEDASH on February 01, 2013,16:43:43

Tell me more ?

Title: Re: Onei 26av400
Post by: imran khan on February 01, 2013,18:47:16

Check dry sold joints frist, Resold blast board H.V transformer and connectors come from power supply..

Title: Re: Onei 26av400
Post by: LEEDASH on February 02, 2013,11:52:54

Cheers imran,so resolder the transformer(s) and maybe it may cure it ?

Title: Re: Onei 26av400
Post by: imran khan on February 02, 2013,17:24:17

Mostly heated areas had dry solds
tip woks many times.
See also
http://techniforum.eu/viewtopic.php?f=7&t=31983&p=97650#p97650

Title: Re: Onei 26av400
Post by: LEEDASH on February 02, 2013,17:41:39

cheers imran i will keep you posted

Title: Re: Onei 26av400
Post by: LEEDASH on February 05, 2013,11:54:15

Ok here is some of me readings

on Q827k 1+2 1573,2+3 312,1+3/3+1 no reading,2+3 313,3+2 1570
D893-no reading
Q828 1+2 992,2+1 300,1+3 3+1 no reading,2+3 300,3+2 900
D883 + D884 reading 524