Lovely, thanks both for your help! Looking more closely I see that Q601 is also shot. If I can tell right it's a 6N50S? And all this circuitry is part of PFC?
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There are still a bunch of smd resistors that burned out, and this whole circuit is part of the PFC.Comment
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So I'd better look for a replacement board... Standby voltage is working (3.3V) but when powered on the led blinks 3 times and that's all. Is the PFC necessary for the power supply to work?Comment
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For standby mode, PFC is not needed, but for operating mode it is needed (PFC starts only when the power supply goes into operating mode).Comment
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Thanks for clarifying!Comment
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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.
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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 bought this https://www.ebay.com/itm/315173036369 power supply to try to convert to a Tube radio B+ power supply I am wondering how to force it on to stay at it's highest voltage. Is there a way to make this not constant current? I need somewhere between 70 to 90vdc at I'm guessing 150ma. I am aware that the switching noise may cause interference in the radio, it is being driven by 4 3.7v lion 21760? cells with a BMS board. I basically want a dumb power supply for 90vdc which will have a cap for filtering between this and the 90v battery circuit
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Philips TV Power Supply LED Driver MSD3463-T8C2 Schematic...11-06-2024, 03:47 AM
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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...
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