Tv blew main fuse, replace and it is ok until I press power on and immediately blows fuse again, pictures below show boards.
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Re: Phillips 50pfl3807/f7 blowing main fuse on power supply
What is the part number for the power supply?
Did you check for shorts on the transistor? -
Re: Phillips 50pfl3807/f7 blowing main fuse on power supply
A27UAMPW-001 is the board #, which transistors do I check and can they be checked in the board.Comment
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Re: Phillips 50pfl3807/f7 blowing main fuse on power supply
start by checking the bridge rectifier then the other transistors on the the heat sinks etc also theres a few diodes on the primary side too check you can check these on the board if any test odd remove them and retest them.Comment
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I found a project in the electronics trash yesterday. A nice Argon SA1 audio amp with some electrical issue. Took it apart and saw that the 4A250V fuse was blown so started lifting components to find the short. Eventually got to two MOSFETs (model FTA14N50C) that are shorted and when i took them out the short was gone.
Now i didn't have any replacements of the same model of course but i found a couple with pretty similar spec i thought (K10A60D & K12A50D) and put them in. Also replaced the blown fuse with a 3.5A250V one. Checked another time for short circuit and plugged it in.... -
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,
Looking for next steps on troubleshooting for an external power supply made by EDAC, model EA11011H-120. The power supply was dropped onto a tile floor and initially and briefly worked but the led power indicator light faded out and the power supply showed no signs of life since.
In disassembly, I found that the large capacitor had leaked and was reading open when measured. The fuse nearest to the AC in had also blown, with no continuity. I ordered a new capacitor and fuse and replaced both, but on power-up with no load the fuse immediately blew.
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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... -
Hi folks,
I'm new to this forum. So my trusty 17-year-old LG 47" LCD recently died. As I was booting it up, I heard a hum followed by a loud bang, sounds of pieces flying around, and loss of power to the unit. Inspecting the PSU, I saw two obvious problems: a blown thermistor (bang + flung pieces) and a visibly bulging main cap. Inspecting as many components as I could with my Fluke MM, I diagnosed that the following components on the "hot side" of the board were also bad: one of the 2 main MOSFETs, main 8A fuse, small cap (25V 47uF) connected to main caps, and a blown...
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