Re: Codegen 350XA supply
hope you guys can bare with me here.....i have had a really good look at all the caps (visually) and i cannot see any that even look suspect - no expanded etc et......given that myonly problem with this supply is the 12v rail would i be just looking at any caps that are connected to the 12v rail or is likely to be something to do with the switching controller???
i realise its a bit hit and miss without being able to see the supply but if you can offer me any help please do
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Re: Codegen 350XA supply
Well, you really should replace all of the caps of the secondary . But as c_hegge said, the psu is not worth it. It is ok if you are doing it to learn, but do not trust some piece of hardware you like to it.Leave a comment:
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Re: Codegen 350XA supply
ok thanks.....so any idea which particular caps i would be looking at.....im pretty sure the large 470u input caps are ok and one of the others look expanded at all?Leave a comment:
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Re: Codegen 350XA supply
Could be bad caps. When they go bad, it can cause problems with the feedback circuit, which can cause all kinds of unusual behavior, as well as the obvious high ripple.Leave a comment:
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Re: Codegen 350XA supply
fair enough but im sort of curious as to what would cause the fault im seeing....just the 12v wrong?Leave a comment:
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Re: Codegen 350XA supply
Junk the PSU. Codegen are junk, and should NEVER be purchased, sold or used in PCs.
EDIT: and this is why - http://www.youtube.com/watch?v=xYB9WkiZ9SQLeave a comment:
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Codegen 350XA supply
HI Guys
hoping to get a bit of guidence here...i have the above PSU which stopped working a while back.
Purple Wire has 5v
Green Wire sits at 4.3 volts before startup
With only the 24way ATX plug connected i can press the start button and the PS starts giving 5.38v on the red and 3.3V on the orange, however on the yellow wire i only get 11.0V
If i plug in the 4 way (yellow + black) to the MB the yellow wire drops to 5.27v and the red wire INCREASES to 6.72V......its not the MB as another supply works fine.....any ideas where i start ??
Adrian
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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... -
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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... -
Hi all, I just need to know that, can i use SMPS type power supply to test and short circuit detection on a laptop motherboard?
I saw 95% of repair guys are using only Linear bench power supply. linear bench power supply is pricy, thats why i planned to get one SMPS supply.
i know that in linear power supply the noise will be very low comparing to SMPS supply.... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
Good day.
I have an AC/DC -> DC PWM (rectifier + 555 buck converter) power supply with MDF11n60, which is getting very hot.
The input is AC from a transformer and the output powers a 24v dc fan. The power supply is used to regulate the speed of the fan.
After several runs on the bench power supply I noticed that the mosfet is reaching 80+C*. The mosfet reads fine on component tester, the thermal paste is changed, the fan is cleaned and with freshly oiled bearings.
When powered directly from the bench psu, the fan takes ~0.7A on 12V. The current consumption is similar...
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