Re: Toshiba 37" inverter board failure
ok so does that mean i still have to remove those 2 teeny tiny smd caps that i can barely see?
ok so does that mean i still have to remove those 2 teeny tiny smd caps that i can barely see?
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Re: Toshiba 37" inverter board failure
If the short is gone with that diode out ... did you check the diode was actually shorted?
If the diode is shorted that is the point when you find or order a replacement diode and replace it, then test the TV.
Don't try it without the diode.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Toshiba 37" inverter board failure
well i dont think its bad i get a reading of 175 in 1 direction and dmm says 1 on other directionComment
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Re: Toshiba 37" inverter board failure
That sounds OK, so do you still have a short on the board?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Toshiba 37" inverter board failure
no short when de90 and de91 is removed reinstall de91 and short comes back de90 still removedComment
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Re: Toshiba 37" inverter board failure
guess i will remove the 2 caps nowComment
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Re: Toshiba 37" inverter board failure
So is DE91 shorted out of circuit?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Toshiba 37" inverter board failure
no in circuit i didnt test it out of circuit but will do nowComment
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Re: Toshiba 37" inverter board failure
yes it is shorted out of circuit too
but that dont explain how come i still had a short when it was removedComment
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Re: Toshiba 37" inverter board failure
reinstalled de90 and installed it shorts both ways so theres still a short and de91 is still not installed when this happens so which cap should i remove first?Comment
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Re: Toshiba 37" inverter board failure
removed ce92 still shorted going to remove ce901 now de90 still installedComment
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Re: Toshiba 37" inverter board failure
"no short when de90 and de91 is removed reinstall de91 and short comes back " and "but that dont explain how come i still had a short when it was removed" I am totally confused now.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: Toshiba 37" inverter board failure
ok if i remove de 91 alone i still have a short if i also remove de90 then the board does not have a short anymore . de 91 is shorted both directions out of circuit de 90 is fine out of circuit.. de90 shorts in circuit with de91 both out and in circuit. if i leave de90 out and just put de91 back in i have a short again. i now have de90 back in de91 is out ce92 and ce901 are out and i still have a shortLast edited by whatusername; 05-28-2014, 08:21 PM.Comment
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Re: Toshiba 37" inverter board failure
so all thats left is the ic i know for sure de91 is bad but i still short with it and the 2 caps removed and de90 in so the ic has to be causing it because if i also take out de90 no more short but de90 tests goodLast edited by whatusername; 05-28-2014, 08:24 PM.Comment
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Re: Toshiba 37" inverter board failure
still confused?Comment
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Re: Toshiba 37" inverter board failure
If the IC is shorted, then this will not make sense "if i also take out de90 no more short" If everything are removed except the IC and the shorts is gone then it can not be the IC that is shorted.
We know that DE91 is shorted and you had verify it as shorted in/out of the circuit. So what resistance do you get when DE90 is in, <1 Ohm?Last edited by budm; 05-28-2014, 08:32 PM.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: Toshiba 37" inverter board failure
ok am going to remove de90 again and retest.. all that will be left in board is the icComment
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Re: Toshiba 37" inverter board failure
ooops sorry had the meter in diode mode lol ok with de90 in and ic in and nothing else there is no shortComment
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Re: Toshiba 37" inverter board failure
so i will replace ce92 ce901 and de91 just cuz they are already out problem is i dont know what to orderComment
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All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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Hello everyone,
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