Dell E198FPB with bad caps
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Dell E198FPB with bad caps
Since I did not see any thread on this model, I just fixed one today so I decided to post it for FYI.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=24809Tags: None -
Re: Dell E198FPB with bad caps
Just bad caps, the Inverter IC p/n did not come out in the pictures.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: Dell E198FPB with bad caps
Another monitor saved from landfill. Good work.
More failed Elite capacitors... Second only to CapXon in terms of failures.Last edited by tom66; 05-20-2012, 06:06 PM.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: Dell E198FPB with bad caps
i got the same model and board with No Power, no standby LED.
No irregularities during ocular inspection (no bad caps), upon voltage check I found only voltages around the BIG cap around 250v up to the Drain side of the BIG Mosfet.
Could it be the 1203 8-pin PWM IC that won't start?
I believe it has an internal start-up circuit.
Help would be much appreciated...
EugeneComment
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Re: Dell E198FPB with bad caps
Check the bog resistor connected to the Source pin of the power MOSFET, and also check the small start-up cap (22~47uf 50V) close to the power MOSFET, try heating the caps with hair dryer.
Check the secondary rectifier diodes, transistors/MOSFET in the inverter circuits section for shorts. It could be that the power supply is in the shutdown mode due to shorted circuits.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: Dell E198FPB with bad caps
budm you are amazing...
The culprit is the shorted (O ohms) 47uf/50v that is located nearest the pwm IC. It prevented the IC from powering up... Replaced with a spare cap with the same value. Dell 19" is up and running...
Thanks Badcap.net.. what a great site.
eugeneComment
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by eryjusHello,
First, I am a complete noob with high voltage stuff. I'm learning, but I need help by someone looking over my shoulder.
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