![]() |
|
|
Thread Tools | Display Modes |
![]() |
#21 |
Badcaps Veteran
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 7,702
|
![]() |
![]() |
![]() |
![]() |
#22 |
New Member
Join Date: Jan 2022
City & State: Los Angeles, California
My Country: USA
I'm a: Knowledge Seeker
Posts: 13
|
![]() Yeah I’ve noticed that too looks like VGH is half of what it should be for a working TCON board. It’s interesting to see what you guys do to troubleshoot. I’m curious how come VGH is a problem why is the voltage lower than it should be?
|
![]() |
![]() |
![]() |
#23 |
Badcaps Veteran
Join Date: Oct 2016
City & State: Bakersfield ca.
My Country: usa
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 2,671
|
![]() I think vgh is created by a voltage doubler circuit. Maybe a shorted diode. I can't read the chip that generates the t-con voltages.
__________________
I assume no responsibility for any stupid suggestions I might post. |
![]() |
![]() |
![]() |
#24 |
New Member
Join Date: Jan 2022
City & State: Los Angeles, California
My Country: USA
I'm a: Knowledge Seeker
Posts: 13
|
![]() Hm I see so it’s one of those little metal pieces like C25, C76, C61 or that area around it that’s shorted?
|
![]() |
![]() |
![]() |
#25 |
Badcaps Veteran
Join Date: Oct 2016
City & State: Bakersfield ca.
My Country: usa
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 2,671
|
![]() C are capacitors. D are the diodes
|
![]() |
![]() |
![]() |
#26 |
Badcaps Veteran
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 7,702
|
![]() can check the caps meter in diode mode, probe on each end, shorted if continues to beep or reading close to 000, if one reads short remove and check off board, if it's ok off board then something else was making t read short.
|
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|