Re: usp440m-42lp psu
still waiting for filter
still waiting for filter
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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
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.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 lolComment
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Re: usp440m-42lp psu
37v AC from theseAttached FilesComment
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Re: usp440m-42lp psu
37VAC is not enough, must be the same voltage as input AC voltage.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.Comment
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Re: usp440m-42lp psu
Ok not getting any voltage at allComment
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Re: usp440m-42lp psu
check the measurements in the picture
the yellow part creates the 5V standby voltagesAttached FilesComment
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Re: usp440m-42lp psu
Nothing from any.Comment
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Re: usp440m-42lp psu
Nothing from any of them. So probably need to pull off diodes and check em !!Last edited by joehezzer; 03-30-2014, 08:53 AM.Comment
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Re: usp440m-42lp psu
BTW, leave everuything disconnected from the board apart from AC IN of course.Comment
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Re: usp440m-42lp psu
Voltage from cathode nothing .looking at the bridge rectifier from above the bottom pin 00.4 volts and the upper pin 00.5v dcLast edited by joehezzer; 03-30-2014, 09:20 AM.Comment
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Re: usp440m-42lp psu
I don't understand.
1st measurement: Put your multimeter probes on the 2 middle pins of BD101. Measure AC. What's the voltage?
2nd measurement: Put your multimeter on the two outer pins of BD101. Measure DC. What's the voltage?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,
I had recently tried to reflash the bios on a dell latittude that has a Wson8 Chip however to no avail.
My question is, Has anyone had much success using the Pogo/Needle adapters to read and write bios without removing the chip from the main board?
I seem to struggling with the solder process wofh my reflow station and currently have 4 machines waiting for a bios mod/reflash.
For context I have just ordered a EZP2019 SPI flash so this is what I would be using alongside the Pogo Adapter.
Apologies if this is the wrong subcategory.... -
Hi guys im struggling with a medion erazer deputy p40 laptop, it just hangs on the erazer logo screen, i have found the ssd faulty and replaces it but still the same fault, i have reset the battery, restored bios to defaults, tested with different ram, taken ssd out completely, i have even had a go at booting memtest x86 but its always hanging on the logo. The usb stick does flash at the start like its reading it but then nothing, any ideas??? could it be a BIOS issue?06-18-2025, 01:45 AM -
Hi there,
Beginner's question, sorry to waste your time...
I'm not certain of the values for the capacitor highlighted (on the picture with the tape) as I am seeking a replacement. Am I correct, looking at the schematics) to think it is a 33 pico Farad (pf) 25 Volts? The size seems to be 0201 from what I can assess and when I try to source a replacement, I'm struggling to find one and it doesn't look like something common.
Any help or suggestion welcome. This is on an Asus FX506H Quanta NJJ DANJJMB1AA0 Rev 1A...
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