Hi, I've bought this tv to repair and hoping for a little help. When I bought the tv the owner said it just goes into standby. When I got home and tried turning it on I got the flashing light no pattern just flashes steadily.
The owner as now told me they had it looked at and said they was told it needs a new mainboard (vestel_17mb62-1)...
Anyways I checked tp202 on the mainboard and it is reading 0v and from the manual it seems it should be reading 3.3v to be good. I have checked the voltages going into to mainboard from CN1 and they read as follows
Pins 1 to 8 read 0v
9. 4.88-4.92 was fluctuating
10. 11.25
11. 0.69v
12. 0.69
13. 11.25v
14. 11.25
15. 3.4v
16. 0.69
17. 3.4v
18. 0.69
19. 3.4v
20. 0.69
Test was done with mainboard attached. I also probed U175 (UTC ld1117al) adjustable voltage reg see attached pic, the first pin furthest away from the cap that sits next to reg reads 0v as does the second and the third reads 0.69v??
What should my next step be?
Thanks in advance
The owner as now told me they had it looked at and said they was told it needs a new mainboard (vestel_17mb62-1)...
Anyways I checked tp202 on the mainboard and it is reading 0v and from the manual it seems it should be reading 3.3v to be good. I have checked the voltages going into to mainboard from CN1 and they read as follows
Pins 1 to 8 read 0v
9. 4.88-4.92 was fluctuating
10. 11.25
11. 0.69v
12. 0.69
13. 11.25v
14. 11.25
15. 3.4v
16. 0.69
17. 3.4v
18. 0.69
19. 3.4v
20. 0.69
Test was done with mainboard attached. I also probed U175 (UTC ld1117al) adjustable voltage reg see attached pic, the first pin furthest away from the cap that sits next to reg reads 0v as does the second and the third reads 0.69v??
What should my next step be?
Thanks in advance
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