umm... wow!

[Digital Pimp]

ok i here's the story....i bought a 250W PSU for an old PII-350 system, it has 1 hd, a floppy a 1mb vid card and a crappy nic in it besides the standard cpu fan nothing else.

ANYHOO system works fine for about a month, reboot problems occur, test the psu by using abother one and it works, dident have mulitmeter to test voltages at that time so i just took it back and told them it was broken...

i get the new one home and set it up, works great for about another month or so, Wakes me up in the middle of the night beeping cause it wont pass POST, i wake up shut it off. later in that day i took it apart and test the PSU with a mulitmeter 12v reads 14.8v 5v reads 6.8v HOLY MOLY! i take the replacement back and tell them my readings.

they give me a 2nd replacement and just for fun i test the voltages while it's still working. almost 16V on the 12v line and just over 6v on the 5v line WTF?!?

the computer is running fine as of now (2 hours in) is this safe to do?

The mulitmeter i am using gives me concistant(sp?) results on my main rig (enermax 350w) when compared to my digital doc, sandra, and bios, so i know it's not the multimeter.

Please give me any suggestions u may have, right now i'm concidering taking it back and demanding a refund, or a better PSU, this one is made by (i believe) MJT, they said they have Y2K psu's in, are those any better?

Thanks, Digital

[Digital Pimp]

Bump, anyone?

Digital

[phantom punisher]

deffinatly not good. many parts in the system run off from those rails and while big componets(cpu, memory) could use a little more, the small ic chips onboard are counting of decent within spec reference and powering voltages. im looking at modifiying the vmem chip on my board. in the manufactures specs it states that it needs a min of 11.4 and a max of 12.6 on the 12 rail and 4.75-5.25 on the 5 volt rail. i wouldnt run that psu

[itizme]

My experience in automation, 5.04vdc is sweet
my pc 4.85 but is flawless so I don't care anymore (btw everyone reports about 4.85 which seems to be a standard for most manufacturers for some reason I don't understand or know.
Over 5.1, I would never do it.
Re your meter, find someone with a good meter, fluke or equivalent and do a comparison. New technology makes cheap meters accurate, just not durable enough for technicians to use day in and day out.

[Digital Pimp]

i have tested my multimeter against a FLUKE something II that has been ISO 9001 certified, and mine was within .05v in my tests so i highly doubt it's the multimeter.

any other help/suggestions.

Digital

[Tismedt]

Like phantom said chips are designed to run at certain specs. Those volts are going to fry something and it wont take long. Take that psu back and look around for something else.

[Digital Pimp]

update.... i got a replacement around the time of my last post, the psu has just started giving me hassels tonight.... man, this REALLY irk's me.... any suggestions, should i demand my money back, or keep getting replacement PSU's?

i'd be all over the 1st option but i dont have my reciept, as it was almost a year ago i got the 1st PSU.

Digital

[warnerwh]

With voltages that high you're asking for more problems than you have. The possibility of frying a number of things on your computer can get pretty expensive. It will be cheaper to buy a quality PSU. I'm surprised nothing has died yet.

[lexx]

decent psu's aren't that expensive - and might save you a lot of grief !