Hello Guys, my compaq PC was accidentally plug to 220V outlet with PSU setting 110V. Eventually, the PSU got busted and smells burnt. When I checked the PSU inside the fuse was broken. What are the possible componets that are affected on this? need your advice. THanks
-
-
Re: Busted Power Supply
try changing the fuse 1st and see how...
for my case ... my power supply went back kicking , once i replace the fuse -
Re: Busted Power Supply
okay thanks. I'll try to change it and keep you posted.Originally posted by ant3202Comment
-
Re: Busted Power Supply
I just changed fuse and plug to the outlet, and also i made a short connection between black and green in the PSU DC output. But it was not working.Comment
-
Re: Busted Power Supply
You probably shorted out the line bridge rectifier check it with the diode checker on your DMM for shorts.Elements of the past and the future combining to make something not quite as good as either.Comment
-
Re: Busted Power Supply
I agree with Krankshaft as well, you should check the bridge rectifier and possibly the primary switching transistor for shorts as well. If there are MOVs (metal oxide varistors) in that PSU, I would check and see if they are blown or burnt.Don't find love, let love find you. That's why its called falling in love, because you don't force yourself to fall, you just fall. - AnonymousComment
-
Re: Busted Power Supply
Look for fried MOV's inside the power supply. Plugging 220 into 110 setting causes the 220 to double which will take out the MOV's and the fuse. You will keep blowing the fuse if you don't replace the MOV's.Comment
-
Re: Busted Power Supply
I forgot to mention that when the PSU is on the 110 volt setting it connects the line voltage to a voltage doubler when set to the 220 volt setting it bypasses this doubler.
When you connected the supply in the 110 volt setting the voltage doubler actually quadrupled the voltage (before it fried) which definitely took out some components along the way.Elements of the past and the future combining to make something not quite as good as either.Comment
-
Re: Busted Power Supply
I plugged in some 110v AT power supplies into a circuit miswired for 208v because the electrician accidentally wired the single phase circuit in the 3 phase box incorrectly. In my case the caps blew. Other stuff might have blown since I didn't try to fix them.Comment
-
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... -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
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....
Comment