Technical help
 

Ok guys, my turn to ask a question now (non sexual of course ;) )

I've just trashed a Jap 50000a model Ps2 while trying to fit an Apple3. The machine did work until I refitted the screws, so I did all the obvious stuff before removing the chip & all associated wiring.

Now, all I have is a black screen. All fuses appear to be ok, but I decided to search a bit deeper & powered up the board.

With the board powered up, the PS14 fuse appears to be dead :confused: Can anybody shed some light on why the fuse should appear ok with the power off BUT dead with the power on? Just for the record, yes, I have tried linking it with a wire.

Just in case, is anybody interested in a broken Jap pink v10 :D

oh dear im not sure whats the problem ask dust2dust he help ya

Tried that, he's just as thik as I am

instead of thinking why dont u replace the fuse or resister

Because I have bypassed the fuse with a link wire. I know for sure the fuse is NOT the fault, but somehow, is related to it.

hmm replace the mobo did u have to mod it for someone

Lol @ sean, has anybody got a spare JAPANESE NTSC V10 motherboard? Yes, this is a job so I've ordered a replacement unit accordingly (+ a couple more for myself ;) )

ok ok im sorry

Sounds like their is a wire hitting the metal. Which is making contact. That would be the only reason that a fuse would blow. As this would make the whole machine live.


Check that

The fuse hasn't blown. It appears to be dead when the machine is powered up, but live when powered off.

sounds nackard

lol
put mobo in the post or take a close up picture ;)
i say u got a short on the board somewere on the 3.3v line
edit its possible for a bios bridge to cause problems with the 3.3v it runs on same voltage

I may just do that Dust, or would I be better sending it to Peter as he appears to be the 'brains' behind the team :p :p :p

team????
:rolleyes:
who needs a brain just good soldering skills :p :p :p

hmm someone doesnt like mr peter bailey huh?

Could be you have blown one of the chips on the MB - as such only when it is powered does it start behaving eratically i.e. shorting one of the imports to ground or similar...

when not powered the fault may not be servere enough to show up as a short.

Also when you say appears to be blown when powered - how have you measured that?

i.e. - are you measuring voltage on both sides and seeing a difference? or are you trying to measure resistance across the fuse when it is powered? :eek: