Re: Upgrade a 300watt noname power supply
Do you mean the components on the primary heatsink?
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Re: Upgrade a 300watt noname power supply
Nice to hear that my english is not so bad at all! So larger primary caps, bigger rectifiers at the secondary, bigger caps at the secondary and replace the diodes for a 6A rectifier. And how much can the power supply deliver after changing all the components?Leave a comment:
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Re: Upgrade a 300watt noname power supply
Your English is not bad at all, actually.
Yes, I'd make sure the rectifiers are all rated for at least 30A. Also, it looks like that PSU used fuhjyyu capacitors. Replace them with Japanese counterparts. It looks like there's ample room for larger capacitors too, so beef the ones after all of the coils up to 2200 or 3300uF.
The OEM for this PSU is Channel Well (CWT).
EDIT: You could also improve the primary side. Replace the diodes (those are 3A, not 4) with a 6A rectifier, and the primary caps with 680uF or better.Last edited by c_hegge; 12-15-2012, 04:44 AM.Leave a comment:
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Upgrade a 300watt noname power supply
Hello,
I have a generic 300watt power supply. The type of the power supply is: Model: ATX-300.
Here are some pictures of the power supply:
The overview of the power supply. It looks better than a lc 300watt psu.
The secondary side of this power supply:
And some information of the psu:
STPS2045CT
STPS1545CT
BYQ28E
The filtering stage and the 2 big capacitors:
I think the diodes are 4Amps and the big capacitors are 470UF 200V
How can i upgrade this power supply? I want to upgrade it because i want to learn something about power supply's and i like to solder. I was thinking to upgrade the rectifiers at the secondary part of this power supply, but what do you think guys?
[Sorry for my bad english, i am 13 years old and dutch, but i am learning it!]
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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... -
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... -
I have a 15 - inch Retina MacBook Pro from the mid - 2014 model. Here is the link: https://www.badcaps.net/forum/showth...light=820-3662 . The battery broke some time ago. After I removed the battery and plugged in the original power adapter, the MBP could boot up normally. However, when I checked with IntelPowerGadget, I found that the CPU speed was limited to 0.8 GHz, and it ran very slowly. Later, I found a solution on GitHub. There is an open - source project called cputune that can set the CPU running speed. So I can now run the MBP at full speed. But another problem... -
Hello!
i got a damaged Manson NTP-5561 (60V, 1,6A DC output) and and the main issue is that the controler IC for the LCD display has a short. The controler IC PIC18F87K90 is mounted on the back of the back of the LCD. Vss-Vdd = 3 Ohm. The 5V and 3,3V power line was killed as well, but that is not a problem. A new LDO 3,3V and 5V 7805 is already ordered.
Replacing the PIC18F87K90 is necessary but that makes no sense without having the HEX dump of the new controler.
Does anybody have such a power supply and could do a HEX dump of the Flash and EEPROM memory?
...04-12-2025, 10:38 AM -
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....
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