Making a Performa 6200 work with another Power supply
I got 6 old Performa 6200 about a year ago, they all had been used heavily in a printshop and I soon discovered that 5 of them had burnt power supplies. Since I had gotten them for free, I didn't really care and simply took out the things I could use and gave the rest away to tinkerers with money enough to buy replacement parts. The sixth of them could be animated to run when it was cooled with a fan on top of the power supply. I illustrated this procedure a while back. Read it now to understand the rest of this article.
to fix it
About half a year
after I did this, also the last power supply had died and I was forced
to try something new.
I removed the power supply from both the Quadra and the Performa. Of course I soon discovered that they had radically different plugs but obviously the same voltages. All I had to do is find out which wire correspinded to each other. Since I lack a volt-meter (which would definitely be a handy thing to have) I had to use the trial and error, or better retry-abort-toast method. I burnt a transistor on the motherboard during that procedure, but fortunately it kept working. After that I opened the window to let the stench go out a bit and found that I had managed to find the corresponding wires. The following picture shows my final results (could have been done nicer, but it works like that too):
|This illustration shows all the pincodes you should need, note that I cannot guarantee their correctness.||This illustration shows which poles go together and how to attach the fan.||This picture shows how to lead the wires out of the case.||The old burnt power supply.||
The new power supply.
(note: some cables have been detached during the shootings, do not take the pictures as a guide.)
You'll soon find that you don't have long enough cables to pull them out of the Performa and connect them with the new power supply. To help this, you will most certainly have to solder a little bit. It can be done without, but I recommend soldering it. You won't need any soldering skills, it's all about linking 2 wires.
you have to unsolder the wires off your burnt powersupply, in my example
this is the 14pin red-blue-black plug with its cables, however, color-coding
of all the wires obviously isn't standardized, so you'll have to see what
corresponds first. Then add about 20-30cm (10 inch or so) of wire (isolated)
to each cable.
Now hopefully you were clever enough to somehow mark what wire has to be connected to which plug of the Quadra powersupply, you can do this by marking them with the corresponding color, either with some colored tape or with some pen or whatever, just make sure you know which ones are +5V, +12V and COM or Ground. TRKL, Power On and -12V on the 6pin plug should remain clear. The Quadra only has one -12V pole on the motherboard plug (22pin). +5V and +12V can be gotten from either the device plugs or the motherboard plugs, although I'm not sure whether that dubious +12V pole really is what I mean, might be something else. I recommend getting all +12V power off the device cables. The most important thing is now to connect the Power ON and +5V TRKL on the 6pin and the 22pin plugs. Without these you won't be able to start up or shut down the computer with a button or with your keyboard. The -12V pole on the 6pin connector is used for sound it seems, never plug that into the orange +12V(?) pole, I think I just fried my sound.(duh) (update: no, I didn't, and I'm now sure the orange pole is +12V)
Once you have connected all the cables to their corresponding place and everything is isolated where it would touch each other otherwise, you can plug in the new power supply into your power point and try to boot your Mac. If it doesn't work, you have to check again if everything is set right. But please, remember to unplug the supply before you fiddle with it again.
fan is the last special case. It has its own pluglet originally, but it
uses 12V power, so you can simply attach it to a +12V and a COM pole from
a device cable. However, it will only run if you connect it properly.