Dead Vestel 17IPS71 power board
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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 -
Re: Dead Vestel 17IPS71 power board
Please watch my video, yes its a different Psu but same concept:
https://m.youtube.com/watch?v=owmBcJ91yJwWilling to help but I'm no expert.Comment
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Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Dead Vestel 17IPS71 power board
So the diodes with your meter in diode mode do not beep ? Also what about the Led mosfet
.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Dead Vestel 17IPS71 power board
If the Led mosfet is good put your black probe on chassis ground and then see if you have 5v and 3.3v at the Ir sensor (pins 2 and 3 of the sensor) which is mounted on the front frame of the Tv, if so the Psu if fine and your motherboard has failed.Last edited by ReeceyBurger123; 05-03-2016, 09:15 AM.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Dead Vestel 17IPS71 power board
to the best of my knowledge and ability and after watching the video
diodes seem ok led mosfet seems ok and no voltage at Ir sensorComment
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Re: Dead Vestel 17IPS71 power board
What is the P/N of the SMPS IC U202 in the primary side?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=24809Comment
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Re: Dead Vestel 17IPS71 power board
OK, FAN6300 SMPS IC.
Check the DCV between GND pin and HV pin, GND pin and VDD pin.
Be real careful you are working in the deadly side of the circuits.
BTW, this power supply is has an always on 12VCC and 24VCC power supplies per SCH by DB.Last edited by budm; 05-03-2016, 10:50 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=24809Comment
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Comment
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Re: Dead Vestel 17IPS71 power board
With your meter set to 20V can you measure VDD again and see if there is a voltage present immediately on switch on that drops suddenly.Willing to help but I'm no expert.Comment
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Re: Dead Vestel 17IPS71 power board
You should have 24v and 12 on the output side of the secondary side diodes, do you have that ? If not sounds like something on the primary is up.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Dead Vestel 17IPS71 power board
I think the Fan6300 must kick in and drive the Mosfet Q15 for the dc supplies to come up.Willing to help but I'm no expert.Comment
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Re: Dead Vestel 17IPS71 power board
Can you check Q15 with your meter set to diode mode. Set switched off.
https://www.youtube.com/watch?v=gloikp9t2dALast edited by dick_barton; 05-03-2016, 11:42 AM.Willing to help but I'm no expert.Comment
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Re: Dead Vestel 17IPS71 power board
Check the resistance of R289, 290, 291.
From looking at the picture, it looks like it has '393' printed on top.
Also check the resistance between VDD pin and GND.Last edited by budm; 05-03-2016, 11:49 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=24809Comment
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Re: Dead Vestel 17IPS71 power board
what is easiest way to check Q15, watched the vid but not making much sense to me if i am honestComment
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