Re: Westinghouse SK-32H540S
Same as before.
Same as before.
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Re: Westinghouse SK-32H540S
Just to be sure - you did replace IC712?
When you were testing caps did the 2 attached to that VR check out okPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Westinghouse SK-32H540S
Yes and Yes however after posting my last response the mail came and in it was a mainboard I got off eBay so I put that in and now it's working again. So thanks for all the help! Now if you could only help me with fixing the Haier TV that I posted a problem with.Comment
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Re: Westinghouse SK-32H540S
Great!
but frustrating - another mainboard we couldnt fix 
well at least not quick enough.
Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Westinghouse SK-32H540S
Well maybe somebody can help me with mine, Have the same problem
All voltages from PS correct, no signal voltage to BL_ON. No standby light but, I can press the power switch and the main blue light does come on.
Checked all VR's and they are fine and to spec.
So whats next in this process?Comment
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Re: Westinghouse SK-32H540S
Replace the main board.Comment
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Dear members,
I have a linear variable power supply with unknown brand name that I used for voltage injection.
Then it failed. I discovered that its transistors (Q1 and Q2) are shorted.
In addition, I discovered that its zener diodes are defective.
I can replace the burned transistors.
But I do not know the model of the zener diodes. the model number is not marked on the zener diodes.
Therefore, I cannot replace the zener diodes.
I do not want to test the zener diodes in a test circuit to discover their model or value.
no schematics are available... -
Trying to learn electronics repair as a hobby. I have no formal training in electronics, circuits, etc. Everything I know, which isn't much, has been learned from watching youtube videos, reading books, forums, etc. This means, sometimes I have a hard time understanding and interpreting what's important when I look at datasheets, and such.
My brother has a TV that I'm working on now. He said he was watching it, he heard a loud pop and it went off. I used my DMM to check the fuse, it was blown. From watching lots of hours of electronics repairs on youtube, I figured that was just a...07-07-2025, 07:38 PM -
Trying to a fancy Wine and Can Beverage Cooler which wasnt working.
Model number AWBC242GGFD
Previous owner states that it needs a new motor.
When plugged up you hear a quick chime from the PCB alarm but it quickly dies away (trails off actually) and there is no sign of life from the unit at all.
I pulled out the main control board to give a look.
Fuses checked out okay. All diodes except one checked out. It was reading in both directions so I pulled it out of circuit and checked it again but this time it read good.
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Hi folks. As the title says, I was doing a port replacement on a Lenovo Thinkpad T480s and in the process of post-solder cleaning, I somehow knocked off 2 or 3 diodes (i think they are diodes) near the main usb-c. I can't seem to find what kind of a diode is that. I know it's ultra tiny and just has a letter "G" on it. Would someone maybe have a proper schematic for the t480s model? I can only find the non-s one and it's quite different to the "s". Would love to figure out what component that is.
Thanks in advance!... -
- g´day! I have a samsung 22" tv monitor to fix. power supply model bn44-00505A. some stuff blown up on the primary, according to research something typical on this model. secondary seems ok. writings on the board say in outputs a5v (standby), b5v (switched) both on the lower 3 diodes on the picture, vamp and b13v (12.8v, both are the linked at the connector that goes to the main board) my question is, are both the upper diodes for 13v? I believe so but wanted to make sure before injecting voltage there to test. I injected 5v on the lower side and standby circuit is working fine
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12-18-2023, 05:45 AM - g´day! I have a samsung 22" tv monitor to fix. power supply model bn44-00505A. some stuff blown up on the primary, according to research something typical on this model. secondary seems ok. writings on the board say in outputs a5v (standby), b5v (switched) both on the lower 3 diodes on the picture, vamp and b13v (12.8v, both are the linked at the connector that goes to the main board) my question is, are both the upper diodes for 13v? I believe so but wanted to make sure before injecting voltage there to test. I injected 5v on the lower side and standby circuit is working fine
Comment