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Re: Unusual resistor in power supply - help ?
I DID take pics of the bottom of the board as well - close-ups at that - just in case some of those SMDs popped and the values would become illegible, but I deleted them when I solved the case
Not a whole lot to see there - just some SMDs peppered around the area where the TNY chip is - mostly feedback stuff.
Wattevah...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.
Assuming... -
Hi
I am trying to repair an ancient Dell 2209WA Monitor which suddenly shut off with a pop sound. On investigation found that one of the fusible resistors had blown. Further investigation identified multiple components as faulty because of which the fusible resistor blew. Please refer the attached circuit diagram showing the components that were found to be damaged.
1. FR950 - blown fusible resistor - 0.2 Ohm 1W
2. Q950 - shorted Q950 MOSFET - 650V 10A N Channel Mosfet
3. R835 - Blown Resistor - 20KOhm SMD resistor
4. D930 - Shorted Schottkey Diode... -
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 guys, I had a problem where I didn't know the value of the burnt SMD resistor in the power supply circuit of the BenQ G922HDAL monitor.
In one of the parts, there is a burnt SMD resistor which leads to the LD7560GS IC as shown in the picture below.
How to determine the appropriate SMD resistor value for this condition? Thank You... -
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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