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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...

Yes. So probabaly a broken trace somewhere

there is a jumper on the board for 2Mb > 4 Mb options, is this ok for you ?

I agree concerning the battery, most of them are still ok, and won't explode making a mess. You have a very nice SE, being the double 800k one (which is pretty rare today, most are the single 800k and HD one) is fine;. PSU are not the Achilles' heel of the model, most are still fine today, but...

The TAM is a PowerMac 6500 in a different case and with a PowerBook (3400) screen and keyboard. The PSU is a PowerMac unit or close to.

If you had a chime, probably the voltages are ok. So looking for any hardware issue is a good starting point (bad Ram…)

Bad heads or head not clamping enough the disk. Are the heads clean ? Can you swap heads (from one not working drive to another)

Have you tried connecting the external drive directly to the internal cable for a test ?

I have not worked on a TAM often, but capacitors are not always the magic solution. Are you sure you are getting all voltages required from the power supply ? Try removing any card present (if you have) remove the HD and try booting with a basic setup. If no improvement you can have a look at...

Yes no issue if you only remove the drive.