Hi all,
I got a 5200 mobo for peanuts -- intended for a Takky mod. Like I do with any old mobo, I washed it, but still doesn't look that great...
Anyway, I've got the wiring harness, and the (mandatory?) ROM/L2 Cache SIMM so I hooked a known-good ATX PSU to the power connector (I know the proper pinout) in order to give it a try. Without load, the +5V line reads about 5.2 V, going down to 5.06 V with the mobo attached -- looks healthy to me.
But it doesn't work
No bong, no death chimes, no nothing -- there's only a faint plop on the headphones upon powering up, but that's to be expected from the audio amplifier. The 603 gets slightly warm, like a 75 MHz IC should, but U15 gets very hot after half a minute or so.
Most likely it's just toast but, just in case, am I missing something? Does it need anything else in order to boot? I have no PRAM battery, not sure if that would make a difference.
On the other hand, I've seen a similar mobo, guaranteed to work, at 120 MHz -- 5320/6320, I suppose. Will it need a ROM/Cache SIMM in order to work? If so, will the one from the 5200 do?
Thanks a lot in advance!
I got a 5200 mobo for peanuts -- intended for a Takky mod. Like I do with any old mobo, I washed it, but still doesn't look that great...
Anyway, I've got the wiring harness, and the (mandatory?) ROM/L2 Cache SIMM so I hooked a known-good ATX PSU to the power connector (I know the proper pinout) in order to give it a try. Without load, the +5V line reads about 5.2 V, going down to 5.06 V with the mobo attached -- looks healthy to me.
But it doesn't work
No bong, no death chimes, no nothing -- there's only a faint plop on the headphones upon powering up, but that's to be expected from the audio amplifier. The 603 gets slightly warm, like a 75 MHz IC should, but U15 gets very hot after half a minute or so.Most likely it's just toast but, just in case, am I missing something? Does it need anything else in order to boot? I have no PRAM battery, not sure if that would make a difference.
On the other hand, I've seen a similar mobo, guaranteed to work, at 120 MHz -- 5320/6320, I suppose. Will it need a ROM/Cache SIMM in order to work? If so, will the one from the 5200 do?
Thanks a lot in advance!