Recent content by bibilit

Hi, Voltage at pin 6 should be 12 volts (AC) unless you have a faulty DP1 (zener diode 18 volts, and 12 volts after RP11) maybe the Zener

Bonjour également, Stepleton will help you for sure, probably knowing Lisas inside and out, he also has several machines, equipment and connections. Yes, I think the first step is to get this French system archived. A Lisa 1 with the original faceplate and Twiggy drives is very sought...

By reversed read flipped a 180 degrees from the original one.

The Unidisk (3,5) can be used on the Apple IIc and is plug and play. But to be used with the Apple IIe, you need a card. Not many were sold (as most of the games and software was available in 5,25 size) The Unidisk can also be used in the Apple IIgs IIRC. This drive is special, this is not...

Nice setup. congrats.

Thanks my friend, hard drive is not an issue, I have got a lot of IDE drives, even one brand new if required.

Hi, i have not worked on one of these for a long time, i have been looking and seeking through the forum but would like to have some experts here. I have collected a nice 6400 and except for the missing HD (not a big deal), the unit is complete and has already some nice upgrades (128 Mb of Ram...

IIRC the grill cover was an option, and many were lost. My set has one out of two.

Maybe you can troubleshoot the issue, have you voltages at the molex side ?

Cut the legs, the logic board is more important than some branded bad chips.

020080 is F12 0404xx should have been G7 Try piggybacking chips, works most of the Time.

Yes for sure don’t buy it unless the battery is still ok and logic board can be repaired. Concerning price, a nice , fully working unit, including mouse and Keyboard should start around $ 300

I think is exactly the same unit, even the trackpad is pretty close (pretty sure the same with a different clic button) The screen, i have already swapped one from a 3400, very close, the connector is not at the same place, but does fit without issue.

You have nobody nearby who has another ram card for a test ? You will be able to troubleshoot if the issue is in the Logic board or ram card.

HI, while i have repaired quite a few units, some of them are still dead today. I don't think the main issue is the zero track for most of them, narrowing it down to bad heads for many units.. The main issues are (in my experience) * dirty heads or bad ones * stuck floppy disk carrier * stuck...