235w agi advice

[ratdude747]

i was cleaning out my closet when i found this old agi 235w power supply:



it came from an old proteva with amd k6-2 350mhz, noname mobo, and lots of other shitty parts. obviously came from a chain smoker:



see all the nicotine?

also, notice the second plug in foreground. this was made when at and atx were both in production.

wimpy heatsinks:



rubycon primary caps:



decent amount of secondary caps (sorry this is the last pic- my camera batteries died and im out of aaa's):



more secondaries on board (total of 10 ones with vents , one of those is tiny (dia 4mm))

secondary caps su'scon

no thin wiring

what should i do with it?

i could:

-strip for fan, primary caps, toroid coils, fuse, regulator, and wire
-recap it
-leave it as is and use as spare



ps- what is the potentiometer for? (3rd pic center, left, orange) i have a few with those near the fan. do they control fan speed? if so, which way make the fan go faster?

[ratdude747]

Re: 235w agi advice

oh, does moving the board into an old bestec box with better ventilation and a spot to mount a second fan help?

[370forlife]

Re: 235w agi advice

Those are decent sized heatsinks for only a 235W. Not much you could use it with though, so I don't know.

FYI these old AGI's are bestecs.

That pot is probably for adjusting the fan or some rail or something...sometimes psu's will have the pots for adjusting the fan's high and low points on a controller board like that.

[ratdude747]

Re: 235w agi advice

i was thinking p3 866, 786mb ram, dvd burne,r cd burne,r 160gb hd, ati 7500 gpu, no oc

[ratdude747]

Re: 235w agi advice

oh, and i once had a newer agi 430w. it was made by hipro

[370forlife]

Re: 235w agi advice

Older AGI's are bestec.

I have 2 agi's, one is a AT from a Quantex QP5 pentium, 250W and its a bestec with the same rubycon and su'scon caps, and identical heatsinks.

The other one is a 300W from a AST adventure, it too is a bestec.

[ratdude747]

Re: 235w agi advice

so its kinda pointless to keep it since my slowest machine is that comapaq i mentioned a few posts ago (p3 866)

should i gut it or not?

[370forlife]

Re: 235w agi advice

It will probalby do fine with that.

[ratdude747]

Re: 235w agi advice

recap it?

[pfrcom]

Re: 235w agi advice

Judging by model number starting with HP on its label, HP-235ATXAK, that one is also a Hipro build

[ratdude747]

Re: 235w agi advice

i had another HP___ psu that looked simular with the white goo and daughter board with pot. simular vent stamping. it was a compaq one full of g-luxons. still works. has a decent hs though and is rated for 250w

but i thought compaq only did ac-bell and delta (deltas are good)

[pfrcom]

Re: 235w agi advice

HP__ model number on Dell power supply

[370forlife]

Re: 235w agi advice

http://cgi.ebay.com/Hipro%2FAGI-HP-2...706137008r6209

Yup, Hipro.

Recap it if you want to...good little psu then.

[ratdude747]

Re: 235w agi advice

would improving the heatsinks give it more power?

[370forlife]

Re: 235w agi advice

its only 235W, it dosen't need any more heatsinks than that.

Even so, those heatsinks aren't that bad.

[ratdude747]

Re: 235w agi advice

if i dont recap it will it kill stuff since i seen no bad caps inside

[KeriJane]

Re: 235w agi advice

if i dont recap it will it kill stuff since i seen no bad caps inside

Hi Ratdude

Maybe.
Only an Oscilloscope can tell for sure, and for that you'd want it under load as well.

If you want to recap, Oklahoma Wolf noted an odd thing. (I did too) Sometimes those "Lousy awful cheap Chinese Crapacitors" do OK.
Sometimes better than a nice Japanese Low-ESR replacement.

I noticed this when replacing OST with Nichicon PW and Rubycon MBZ..... The OST looked better on the scope! O.W. thinks that sometimes the circuit design might be optimized for the particular caps the PSU came with.

BTW, what's the Date Code on those caps? The BadCaps plague started around 1998 or so didn't it? Earlier than that might be OK. Of course they could be deteriorated from age.


Have Fun,
Keri

[ratdude747]

Re: 235w agi advice

i dont know- it is a paperweight until i need it someday

it had been used for a while with no ill effects on anyhting

[ratdude747]

Re: 235w agi advice

update: i checked voltages:

3.3- 3.36

5- 5.16

-5 = -4.96

12- 10.66 no fluctuations

is this ok or bad?

[linuxguru]

Re: 235w agi advice

It's marginally OK - the +12v rail will probably go higher when the lower rails are loaded a bit. It won't hurt to recap all the secondary Suscons. You may also want to replace any small caps (22-100 uF) on the primary side of the auxiliary (+5Vsb) flyback supply - these are known to degrade with age on several different designs.