Re: usp440m-42lp psu
still waiting for filter
still waiting for filter
-
-
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
Comment
-
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 Filesif you find these attachements useful please consider making a small donation to the site
Last edited by joehezzer; 03-28-2014, 03:04 PM.Comment
-
-
Re: usp440m-42lp psu
Right ok test out put again and got 263v Ac atleast I have a reading this time lolComment
-
-
Re: usp440m-42lp psu
37v AC from theseAttached Filesif you find these attachements useful please consider making a small donation to the site
Comment
-
-
Re: usp440m-42lp psu
37VAC is not enough, must be the same voltage as input AC voltage.Comment
-
-
-
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
-
Re: usp440m-42lp psu
Ok not getting any voltage at allComment
-
Re: usp440m-42lp psu
check the measurements in the picture
the yellow part creates the 5V standby voltagesAttached Filesif you find these attachements useful please consider making a small donation to the site
Comment
-
-
Re: usp440m-42lp psu
Nothing from any.Comment
-
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
-
Re: usp440m-42lp psu
BTW, leave everuything disconnected from the board apart from AC IN of course.Comment
-
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
-
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
-
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, I'm looking for a BIOS and EC chip for my Intel NUC8i3BEH (motherboard model NUC8i3BEB). I received a faulty unit and am trying to repair it. The previous owner tried to tinker with it and erased the BIOS and EC chips, and I've been struggling with this for several hours (I'm a complete novice at this). I managed to rebuild the BIOS from the NUC8i7BEH, but the unit still doesn't respond to the power button. The board seems to be receiving power normally, as the green LED next to the SATA connector is lit. I would really appreciate if you could check if I rebuilt the bios correctly and provide... -
Hey all!
I updated my Lenovo laptop a couple of weeks ago using Lenovo Vantage and the BIOS update has bricked my computer.
I have a CH341 programmer but have been struggling to fix it.
My BIOS chip is the GD25LR128DSIG.
Latest BIOS update GLCN68WW.
If someone could help with an exact tutorial for this specific BIOS, that would be great!
When I use AsProgrammer to read the IC it comes up with IC model: GD25LQ128C and not the one above.
It also has a lenght of 16777216 where as the below tutortial says to... -
Hi everybody. I forgot the password of my BIOS and am now struggling to reset it. I removed the battery for a whole week-end but the BIOS is still password protected. I think I must shortcut 2 pins but I don't know which ones. None is labelled G2201/RTC_RST/RTCRST/JCMOS.
I would be VERY gratful to anyone who can help :-)...11-04-2025, 10:01 AM
Comment