Hello everyone please help me troubleshoot this tv. It has no stand by light thus it will not power on... all the sudden. Here are some pictures. I assume the problem lie somewhere on the power supply board (PSB).. So here are some close up pictures of it. The fuse is good and but i got zero reading at those areas circled in red. Thank you so much for any helps/suggestions.
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westinghouse DWM55F2Y1 will not turn on
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westinghouse DWM55F2Y1 will not turn on
Hello everyone please help me troubleshoot this tv. It has no stand by light thus it will not power on... all the sudden. Here are some pictures. I assume the problem lie somewhere on the power supply board (PSB).. So here are some close up pictures of it. The fuse is good and but i got zero reading at those areas circled in red. Thank you so much for any helps/suggestions.Tags: None
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Re: westinghouse DWM55F2Y1 will not turn on
If the main fuse is OK then you need to find out first if you do have DCV between the two legs of the main filter cap in the primary side of the power supply board, it should be around 160 Vdc.Last edited by budm; 07-23-2016, 12:43 AM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: westinghouse DWM55F2Y1 will not turn on
So what is the P/N of that IC 1?
What you show on the measurement does not mean anything unless we know what the pin out of the IC is.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: westinghouse DWM55F2Y1 will not turn on
NCP1607 is the PFC Controller IC.
https://cdn.badcaps-static.com/pdfs/...a1d57aebe2.pdfNever stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: westinghouse DWM55F2Y1 will not turn on
What do mean by 0 Volt?
What did you set the meter to?
You can test using Ohm mode in 200 Ohm scale to see if the diodes show low Ohm in both direction, no power to the board of course.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: westinghouse DWM55F2Y1 will not turn on
BTW, the diode on the heat sink is common cathode, the two out side pins are tied together, the middle pin is the cathode so you can test the resistance between the outer pin and the center pin.
You might as well try replacing those tow startup/running caps to see what happen.
You also need to get the PN of that tiny SMPS IC so you can find out if it is getting the Vic to run the IC or not.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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