Power board question
I do a lot of LCD/Plasma/DLP repair and I get shocked by power boards frequently, but now I'm worrying that one day I might get shocked really bad, bad enough to kill me. So, how do I fully discharge a power board without waiting days or weeks for its remaining charge to drain.
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I have salvaged and fixed 18 TVs (1 DLP), 22 LCD monitors, 8 stereos, network stuff, and more laptops and computers than i can count.
Service Menu/Factory Reset Codes for TVs
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: Power board question
You can use 2000 Ohms 25 Watts resistor to discharge the main filter cap that can have voltage up to 400VDC. You do not want to do dead short to discharge the cap due to very high current it can deliver.
You should also plug what ever you are working on into GFCI outlet to protect you or use Isolation transformer.
http://s807.photobucket.com/user/bud...tml?sort=3&o=7Never 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: Power board question
Thank you so much!I have salvaged and fixed 18 TVs (1 DLP), 22 LCD monitors, 8 stereos, network stuff, and more laptops and computers than i can count.
Service Menu/Factory Reset Codes for TVs
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Power board question
after i discharge any big caps should i worry to much about touching traces on the board?I have salvaged and fixed 18 TVs (1 DLP), 22 LCD monitors, 8 stereos, network stuff, and more laptops and computers than i can count.
Service Menu/Factory Reset Codes for TVs
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Power board question
After discharging the cap, the use the meter to see if it still has any voltage left on it.
Touching the traces with TV unplugged? If the voltage is no longer present then it's OK.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
-
I have salvaged and fixed 18 TVs (1 DLP), 22 LCD monitors, 8 stereos, network stuff, and more laptops and computers than i can count.
Service Menu/Factory Reset Codes for TVs
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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