Re: usp440m-42lp psu
Nothing from any of them. So probably need to pull off diodes and check em !!
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Re: usp440m-42lp psu
check the measurements in the picture
the yellow part creates the 5V standby voltagesAttached FilesLeave a comment:
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Re: usp440m-42lp psu
Go right to the connector where it says 5VSB (CN801). Measuring DC you should have 5V.
Then connect a 1k resistor from 5VSB to RL_ON. The relay should come on and you should get 9V, 24V and 12V.
Then connect a 1k resistor from 5VSB to VS_ON. You should get about 190V VS and 60V VA. All DC.Leave a comment:
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Re: usp440m-42lp psu
37VAC is not enough, must be the same voltage as input AC voltage.Leave a comment:
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Re: usp440m-42lp psu
Right ok test out put again and got 263v Ac atleast I have a reading this time lolLeave a comment:
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Re: usp440m-42lp psu
ok so i have changed filter no joy, i must have tested something wrong somewhere or has blown old filter and something else. i have not had chance to test it properly yet. i did test the rocker switch and it tested ok but on closer inspection it looks a bit melted.
when i plug the power cord in i can hear what sounds like a relay click from the area pictured and shorting sound if i can use that termAttached FilesLast edited by joehezzer; 03-28-2014, 03:04 PM.Leave a comment:
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Re: usp440m-42lp psu
fingers crossed there is no other damage. the chap said he had a sparky round his house the week b4 sorting his house electrics out, then a week later he had a power cut because of the weather and the set never turned back on, fingers crossed there is no other damage
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Re: usp440m-42lp psu
How did this work out for you? Was it the Filter?Leave a comment:
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Hi guys
I need one of these MP2329CGG for a repair job. It's a 24V 6.5A buck converter. But I have not been able to find a supplier who has that component.
Actually I would buy a few as I always think if I found one faulty already I will probably find more in the future
I had one supplier on Aliexpress who gave me a price $2 each, but I have been waiting some days since I asked for shipping price and they don't reply
Does anyone know where I can buy that part in small quantity (let's say 5 of them), or any equivalent I could use? it supplies the Standby... -
Hello, although I've never been formally taught soldering techniques, etc... I've not really run into too much trouble soldering, with the exception of this job...
I've got a supposed blown transistor on my fuel pump on my car and I'm trying to replace it. It's a gel encased circuit booard with very fine connections. Please see photo uploaded.
I've cleaned up the area that I'm working on with alcohol scraped off the wires, etc..
I cannot get any solder to now stick any of the connections, I've used various grades of solder and flux combination, nothing... -
Hi All,
Currently struggling with this bios and EC Problem and hope someone with more knowledge might be able to help, so my laptop PC Specialist Ionico 17 ( Tongfang GM7TGxP / 11800h rtx 3070 ) had lower than normal resistance on the PCH, so before i changed the pch i attempted to flash a bios/ec from same type of laptop board ( i am not the original owner and PC Specialist would not help ) which did flash ok but no change, after that i changed the chip and all resistance readings from all rails were normal, so i turned the laptop on with the new PCH and it turned on as soon as i... -
Struggling to identify this component.
I thought it might be an Linear Regulator but the pins in the circuit don’t seem to correspond
Many thanks -
Hello.
I am struggling with EGT LED monitor. Panel is made from AUO.
I have 1/4 good and 3/4 bad pictures like you can see from the pic.
So far I checked power supply and it is ok. I cleaned connection from panel to LVDS and LVDS to digital board. No luck.
What is the problem with this LCD?
Pannel, LVDS or digital board. I have no idea so please help me someone.
Regards, Sebastijan....07-26-2025, 06:10 AM
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