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Dell Monitor repairing trobleshoot

I have Dell monitor model no e773s everytime blowsoff horizental out put transistor and blink the front or power led what is the problem ?

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Check for output power from horz transitor. if this ok check diodes for short and replace. check output power after repair.
check that power is right form power supply. if not repair.

Posted on Jul 20, 2008

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Posted on Jul 09, 2008

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Check the circuit of secondary line 1st check the all dioed must be shorted. then replace the horizontal transiistor out put.

Posted on Apr 18, 2008

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Posted on Jan 02, 2017

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Or any one with a service manual for Dell E773s monitor


Service book for E773c is the only thing i found.
Not exactly the model you asked for, but i guess it might be no huge differences between and it could help:
http://www.go-gddq.com/upload/2013-01/13010819152557.pdf

Nov 15, 2017 | Dell Computers & Internet

1 Answer

Benq 567s lcd monitor does not power up. Switch led blinks but goes dead. Tried replacing capacitor 450v 82uf with 400v 100 uf but did not work. please help.


That cap is for the Primary power supply switching circuits. How is the DC secondary side, no blown fuse, shorted transistors in the inverter circuits? Pictures will help, budmrtn@aol.com
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
It may have the same bd as DELL since BenQ makes monitors for DELL and HP.

May 21, 2010 | BenQ FP71G 17" LCD Monitor

1 Answer

Monitor led is blinking green but screen is black. Unplugged and replugged all cables already.


Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed DELL monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
Replacement board: www.lcdrepair.us

May 19, 2010 | Dell E173FP 17" LCD Monitor

1 Answer

Dell E173FPs LCD screen (4 years old) is blank, power button is blinking green. I have read numerous articles about the same problem on similar models (E173FPc?) caused by poor solder connections at...


Replacing transistors would be the last thing in that troubleshooting. First, check all electrolytic capacitors if there are any of them "bubbled", replace those. Next, if there is the fuse used for supplying DC voltage to the inverter area, take it off and check if LED will still blink as before. If there's no such fuse, you can cut the trace, supplying DC voltage to the inverter, another words, you need to unload inverter from power supply and check LED behavior then, if it will stay steady, then next steps will be to troubleshoot the inverter, otherwise, using ohmmeter ring all capacitors and diodes in the power supply part, especially connected to PWM chip at primary side of pulse transformer. By the way, what kind of chip is there?

Apr 05, 2009 | Dell E173FP 17" LCD Flat Panel Monitor

1 Answer

I have a compaq 15" monitor which has no display.


1.poewr LED blinking or not.if in case LED blinks one time. problem in LOT .Cheak horzontal Transistor also.
1a) power out put voltages
2.drypoints in neck board.
3.cheak display cable.

Dec 19, 2008 | SAMTRON 55V 15" CRT Monitor

1 Answer

Panasonic Th37PE30 Viera plasma stopped working


here is a complete list of all codes for panasonic tv's rgeardless of model if its panasonic it is these codes

1 Blink SOS: This shutdown operation is usually caused by a lack of communication between the A and the D boards.
1 Blink SOS: This shutdown operation may be caused by the improper connection of a SS board connector to the panel.
2 Blinks SOS: Pin 87 of the MPU IC9003 monitors the 15V line. During normal operation, the transistors Q9053 and Q9054 output a high to pin 87. If the 15V line is missing or shorted, a low is provided to pin 87. As a result, the unit shuts down and the power LED blinks 2 times.
3 Blinks SOS: IC9807 is a 3.3V regulator located on the D board. Its output is monitored by IC9003. If the 3.3V is not present at pin 86, the MPU shuts down the unit. The power LED blinks 3 times.
5 Blinks SOS: Pin 85 of the MPU IC9003 monitors the 5V line. During normal operation, the transistors Q9051 and Q9052 output a high to pin 85. If the 5V line is missing or shorted, a low is provided to pin 85. As a result, the unit shuts down and the power LED blinks 5 times.
6 Blinks SOS: Pin 90 of the MPU IC9003 monitors the status of the SC board. During normal operation, the transistor Q6581 and IC6581 output a low to pin 90. If the SC board becomes defective, a high is provided to pin 90. As a result, the unit shuts down and the power LED blinks 6
6 Blinks SOS: 6 blinks of the power LED may also be obtained from pin 3 of IC9003, the DRV_RESET input. The D board provides the 5V source needed to power the C boards. On the C2 board, the 5V is routed back to the D board via connector C20/C10, C11/D31 causing pin 3 of IC9003 to be high. If 5V is not routed back to the D board, pin 3 of IC9003 goes low. The set goes into shutdown mode and the power LED emits 6 blinks.
7 Blinks SOS: Pin 93 of the MPU IC9003 monitors the status of the SC, SU, SD board. During normal operation, the photo-coupler PC6480 outputs a low to pin 93. If the SC, SU, or SD board becomes defective, a high is provided to pin 93. As a result, the unit shuts down and the power LED blinks 7 times.
8 Blinks SOS: Pin 91 of the MPU IC9003 monitors the status of the SS board. During normal operation, pin 8 of connector SS23 outputs a low to pin 91. If the SS board becomes defective, a high is provided to pin 91. As a result, the unit shuts down and the power LED blinks 8 times.
10 Blinks SOS: The SUB5V and DT9V sources created on the A board are monitored by IC1100. If they are not present at pin 30 and 34, the MPU shuts down the unit. The power LED blinks 10 times.
10 Blinks SOS: The F_STB_15V of the P board, as well as the derived SUB5V and DT9V sources are monitored on the A board for excessive current. If a short circuit is developed in one of the supplied lines, pin 114 of IC1100 receives a high. The SUB5V and DT9V lines are also monitored for excessive voltage. When an over-voltage condition is detected, a high is also output to pin 114 of IC1100. The DT9V is provided to a DC/DC converter to create the BT30V for the tuner. If the BT30V becomes excessive, a high is output to pin 114 of IC1100. A high at pin 114 of IC1100 causes the unit to shutdown and the power LED to blink 10 times.

Feb 26, 2008 | Televison & Video

1 Answer

LED's blinking, no video


Your C5707 transistors in the monitor have failed. Suggest replacing all four with the Sanyo C5707 transistor. A common problem.

Dec 10, 2007 | Dell E173FP 17" LCD Monitor

6 Answers

Dell E172FPb 17" LCD Monitor Problem


Your inverter power supply has gone bad. You will need to replace the whole board or replace the the 2sc5707 transistors in the inverter area. Check out this link for installation videos and how to for that model
http://www.lcdrepair.us/Installation.html
They also sell the whole board as well as repair kits

Oct 27, 2007 | Dell E153FP 15" LCD Monitor

6 Answers

Dell Blinking Power Light


Just wanted to say Thank You for the info on this site. I had the same problem as previously posted. When powered up, the monitor showed a fast flash of the desktop and then went black, with the power indicator flashing green. I read the posts, purchased the capacitors and the 4 - 2sc5707 transistors through ebay. I ordered them on the 6th and rec'd them today. I only had one bad capacitor and one transistor that checked bad, but I ordered 5 caps and 4 transistors. When ordering the caps be careful of the height of the caps. I found this to be a problem because I ordered the 50v, 105 degree Panasonic caps that didn't fit with the enclosure attached, so I used the 4 good caps removed previously and replaced the bad one with a 470uf, 50v. 85 degree cap from Rubycon I found among my spare parts. Installed the parts and the monitor is working properly (for the last two hours) so I'm happy for as long as the repair lasts. Thanks again for the info.

Dec 05, 2006 | Dell E173FP 17" LCD Monitor

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