visio vx37l resistor indentity help

budm

Badcaps Legend

Join Date: Feb 2010

Posts: 40746

Country: USA
#41

07-27-2017, 09:11 AM

Re: visio vx37l resistor indentity help

I asked about how you test the IC in post 36, and you reply "LOL oops i already tested it. nothing blew up." in post 37.
Bottom line: replace the IC beside the MOSFETs +any damaged Gate drive network.

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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sdinelli

Sdinelli

Join Date: Aug 2014

Posts: 152

Country: USA
#42

07-27-2017, 01:03 PM

Re: visio vx37l resistor indentity help

Originally posted by budm

I asked about how you test the IC in post 36, and you reply "LOL oops i already tested it. nothing blew up." in post 37.
Bottom line: replace the IC beside the MOSFETs +any damaged Gate drive network.

I shouldn't have used the word tested.
I just meant I turned it on and nothing blew up.
All I really know about the IC is that I have 10.66V on pin 12(Vs) I think that's above the threshold to turn it on.
I didn't have the schematic when I was poking around.

So ill should pull the mosfets to Test them and see if I need some or not right?
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sdinelli

Sdinelli

Join Date: Aug 2014

Posts: 152

Country: USA
#43

07-31-2017, 04:27 PM

Re: visio vx37l resistor indentity help

Welp, The one mosfet is bad. doesn't turn on. the other I was able to turn off and on.
Will order:
x2 .22ohm resistor
x1 4.7ohm smc resistor
x1 IC L6598
x1 MOSFET (STP12NM50FP)

Will report back when installed and tested
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budm

Badcaps Legend

Join Date: Feb 2010

Posts: 40746

Country: USA
#44

07-31-2017, 04:31 PM

Re: visio vx37l resistor indentity help

I would replace both MOSFETs since they work together.

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
sdinelli

Sdinelli

Join Date: Aug 2014

Posts: 152

Country: USA
#45

08-05-2017, 12:27 PM

Re: visio vx37l resistor indentity help

UGH I'm pissed I got all the parts and installed everything. when I got to the IC it turned out I ordered the 16-DIP and not the surface mount. gerr

Should have just bought the board for 35$
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sdinelli

Sdinelli

Join Date: Aug 2014

Posts: 152

Country: USA
#46

09-30-2017, 11:17 AM

Re: visio vx37l resistor indentity help

well finally had time to get the part and replace the 16pin IC.
and guess what it works!
Feels good.

thank you everyone for your assistance
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budm

Badcaps Legend

Join Date: Feb 2010

Posts: 40746

Country: USA
#47

09-30-2017, 02:20 PM

Re: visio vx37l resistor indentity help

Thanks for the follow-up on the repair.

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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