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Finally got it working. Just put 2 new pram batteries where i cut off the old batteries

Yes i have 2 new pram batteries but nothing happens. Ill try testing the circuit now

Im sure this is common but I have 3 Mac II motherboards 1 thats been recapped and has a soldered in battery holder. I cant get any of these to work. Are the power supplies known to fail on these?

I have a powerbook 165c that did the same thing. Turned on when i got it then after i took it apart it decided not to work anymore… same thing happened with the spare one i got.. i think the interconnect cable goes bad and messes it all up

I was able to get it to work by hooking up a composite cable to the tv and it worked. I will try the vga adapter suggestion at some point. Now I just need software..

Hello I just got a working apple iigs for $65 with the floppy and keyboard. I cant seem to find a iigs monitor at a decent price anywhere. Can i use any mac monitor? Is there a vga adapter available? What about the apple composite monitor? Thanks

That powerboard is the issue on mine. It starts squealing and wont boot up. The last one i had worked until one day the display wouldn’t turn on. At least i made a bunch of money selling the parts.

I would get a different power supply And recap the board

Good point i checked the solder and its fine it makes a small squealing noise during startup on the powerboard

My Powerbook 3400 i just bought does not want to stay on. I found out it is the powerboard under the trackpad that is bad and causing it to shutdown during startup. Is this capacitor related or something else? Thanks

Thanks now after taking it apart the cables are connected to the floopy drive and keyboard so not sure what that is for. The video out connection jack is solid. Some of the wires from the weird mod disconnected and now the iic wont turn on at all after i put it back together lol I’ll deal with...

I cant get the apple iic to display anything on the screen and it has a weird cord inside, whats wrong with it? When i first bought it displayed weird characters on the screen. Now no video signal. Anyone know what the weird plug is? Thanks

If the power port smells like fish the capacitors leaked and could damage the board if youplug it in again

Sounds like junk to me just replace the motherboard

I know this was probably posted but the issue is the screw inside the handle is stripped and I can't use the hex  tool to open the SE. Somebody put it in tight and I don't think there's another screwdriver that can fit under it. Is there another way to open it without breaking the plastics? Thanks

Well I was able to find the new old stock 2300c board online and I just put a scsi hard drive in it tonight. So far it's working. I also ordered the ata cable online also. But if it kills another drive I just give up 

Hello my powerbook duo 2300 has been through 5 hard drives and every single one has stopped working after being used in this duo. I know these drives have limited life but I'm sick of getting new drives for this thing and it's too suspecious that good drives keep failing only in this machine...

Good job removing the pram battery in it. That's what destroyed mine

So I got this Mac se it's in really bad conditon it smells like sewage and mold. Anyway it turns on and runs but the screen is off. It was fine for a while then it adjusted itself so now it's stretched and I can't adjust it. Also the sound is really low . Any ideas? Thanks. 

get another board then. or its a bad trace mabie?