Re: Dell 550w Power Supply Shorted Outputs
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
Hello,
This is my problem:
Laptop: Dell Latitude 5501
Motherboard: EDC51 LA-H181P
I have two power rails shorted to ground, +1.0V_PRIM and +3.3V_ALW_PCH. I removed solder on PJP302, +1.05VALWP (pad1) not shorted but +1.0V_PRIM (pad2) shorted.
I also cleaned PJP38, pad1 not shorted, pad2 (+3.3V_ALW_PCH) shorted to ground.
I measure the resistance of all the coils on the motherboard and they all were not shorted to ground except coil PL301 before I removed the solder on PJP302.
I injected +1.05V - 2A... -
Hello:
I have both these laptops that appeared to have the same fault so I thought I would have a go at replacing the PCH as something to learn, they both are using the same PCH.
I started on the ACER:
Up on connecting power no signs of life but current is consumed from the bench power supply and the PCH is hot.
All the caps on the top of the PCH are showing 0 ohms and the 3.3v rail is shorted.
I followed the videos from Sorin, Electronics Repair School on Youtube heating from the bottom to install. I practised on around 10 scrap... -
Hello,
I have water damaged Dell G3 3779.
Things I did. During visual inspection i noticed PL911 filter was blown up and caps around it PC901, PC902 .. all up to PU901 shorted, found culprit shorted cap on top side of board PC905, removed cap and short up to PU901 is gone. Shorted PJP901 to bypass filter for the moment.
problem is CPU and GPU vcore coils are all shorted aswell and I don't know where can I safely inject power to test which component or driver is bad.
PLA01 20.8 Ohm PLI01 3.8 Ohm, PLI02 3.8 Ohm, PLI03 3.8 Ohm, PLI04 3.8 Ohm...
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