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| Click here to select a new forum. | | Resurrecting a 5200 mobo | Posted by: zuiko21 on 2011-12-26 15:31:09
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!
| Posted by: techknight on 2012-02-15 19:36:41
No, it needs nothing else to boot. I had wired up an ATX power supply to a 52XX machine years and years ago when the main power supply had failed, and i had the external DB15 connector for a monitor.
it just worked. all there was to it.
| Posted by: zuiko21 on 2012-02-18 16:23:20
Uh-oh, that's bad news... would mean both of my 5200 mobos are dead xx(
On the other hand, I have no PRAM battery. Maybe they need either the battery or the ADB power line? I'll try to build a makeshift PRAM battery connector with a pin header.
| Posted by: techknight on 2012-02-18 20:50:44
mine has no PRAM batt either. and they fire right up. But mine both have ROM cards. you have to have the ROM card. Too bad your in spain, or i would send you this 5200 board that I have. it works, but to me its junk. no machine to use it in. Spare.
| Posted by: LCGuy on 2012-02-19 01:32:06
FWIW, the 5260 doesn't need a ROM SIMM - they have their ROM onboard. However, all other 52xx/63xx boards do need a ROM/cache SIMM.
| Posted by: techknight on 2012-02-19 18:54:04
Right. the spare board I have is a 5200.
| Posted by: Bunsen on 2012-02-21 05:53:45
Just my opinion, but for what it's worth, I think a 5200 series board is a cruel and awful thing to do to a poor old CC 🙁 Especially considering the amount of work involved in a Takky mod. Have you thought of finding a better board? (6360, 6400, 6500, 5400, 5500)
| Posted by: zuiko21 on 2012-03-04 09:52:33
Well, the 5200/6200 do have several quirks, and they definitely aren't the best performers out there... but still they are a great improvement over the sluggish original CC 😉
The Mystic upgrade should be almost as snappy as those 75 MHz crippled PPCs, and it's a much simpler plug-and-play modification. But the LC500 series is almost unheard of in Europe, it seems; and the cost to ship one of those heavy machines from USA would be prohibitive -- unless I could find a bare, working Motherboard.
Another factor in praise of the x200 is the ability to run (even slowly) PPC-only software -- quite interesing since my first Macintosh was a 7500! Also, once the Takky work is done, upgrading that with, say, a 6500 mobo would be fairly easy.
But still don't know why can't I power up any of the 5200 mobos... it's unlikely that both went south! :?:
| Posted by: Bunsen on 2012-03-05 20:34:19
once the Takky work is done, upgrading that with, say, a 6500 mobo would be fairly easy. That's a good point. 🙂
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