Recent content by td75

Does anyone know where I could buy ROMs for Apple IIe please? I definitely want to try a different video ROM but no idea where I could fine one. Have been looking out for logic boards but not much available.

These UK analog boards are a nightmare to repair! I replaced many parts and ended up shocking myself twice! There was high voltage going through the heatsinks and battery bay and not sure why. I ended up buying a working complete 512k off Gumtree for £50 and it had the exact same analog board as...

Okay thanks have bought one from eBay hopefully it works!

Thanks for your help. Have done searches and found similar modules but they vary quite bit in size. Can't seem to find anything with same dimensions. This is the closest I can find here on eBay so not sure it will be compatible...

Got the one drive to read disks again... had to adjust the head on "x" axis slightly - one to go:) Uniserver if you have a spare sensor block to sell please let me know.. thanks

Ha ha! Yeah would be fun if I could get them working! That is an idea to drill them out but will probably end up butchering the block! I now have 2 non-working drives.. the one with a good sensor gives a "X" on floppy and keeps ejecting the disk no matter were I move the sensor. I did mark it...

Thanks for your help. The LED seems to be glued solid into the block, not sure how to get them out without breaking the block itself..

Finally found faulty part.. it was a faulty sensor after all. I ended up swapping a sensor from a working drive and works perfectly. Have cleaned the other sensor and resoldered connections and cleaned the plug but still doesn't work. Have tried testing with multimeter but not too sure what I'm...

Is this CPU compatible with Apple IIe: http://www.ebay.com/itm/1pcs-R6502BP-R6502B-CPU-40-Pin-Package-Rare-/251245225364?ssPageName=ADME:X:RTQ:US:1123

Yes I get the same fault with nothing in the slots. I guess this fault would be much easier to resolve if I had a working logic board which I could swap parts. I'm going to replace the RAM first I think and if still a problem then will move onto CPU & ROMS. Any idea where I can source...

Thanks for replies. I don't have an air can to try this but may be worth buying one to try. I was going to just remove all the RAM as I would like to put sockets in. The graphics corruption image is different every time I turn on/off, could this still be a RAM fault?

Thanks for your reply. I don't have an oscilloscope or spare parts unfortunately. I have found quite a bit of corrosion in 40 pin socket for IOU IC so going to swap the socket out as looks quite poor quality really. Do you know if I can replace standard sockets with gold plated turned pin...

My Apple IIe was working just fine when it froze. I did a reset and ended up with corrupt graphics. Every time I power up or reset I get get different corruption. I have tried reseating every socket IC but still the same. Could this be caused from faulty RAM?

Thanks for all the help everyone. I don't think it's a cable fault as it was working before and cable hasn't been changed. I think it may have something to do with sensors so will clean these up as soon as I get some time to test again.

I have recently acquired a Mac 512k with SONY OA-D34V-22 floppy drive. I have opened the drive up and found the head has moved to the very front and seems to want to keep moving and therefore making a clicking noise. What should stop the head from moving when it reaches it's limit? Could this...