I got ripped off on a dead Amiga 4000

[Firedawg]

@ceaser

For the processor card, memory, and various cabling to become disconnected during shipping is a 100% guarantee.  I would go through the entire system and reseat and reconnect everything, especially the processor and memory for nothing will work if they are not right.  If still no joy, then disconnect everything other than the power supply, mainboard, memory, and processor.  Report back.......

Note:  With just the power supply connected to the mainboard and just the processor and memory seated this will give you the basic connections.  If everything is fine at this level you should see the request for workbench disk.

The Dawg

[Firedawg]

The guy who sold it to me thinks it's the U261 RAM clip that's bad. That's the first one in the sequence, so If you had all the RAM in you have to take them all out before you can get at the U261. He's had the clips upgraded so it snaps firmly in place with metal clips but it IS consistently doing a green screen. A few times I got the light grey like it's going to use the HDD to boot to workbench (3.0 is what's on it), but it doesn't. Maybe it almost gets past the chip RAM test and then just has enough time to go green before crashing. That page is great though. I'm going to use it as a reference thanks.

@ceaser,
 
Have you broke the machine down to just the power supply connected to the mainboard, processor, and memory (testings one bank with a different stick each time)? This will give you a base configuration to start your problem solving. The Chips on the mainboard could have come loose during transport, especially if the computer was not properly packaged, so reseat them if necessary. I have been there and done that and each time I have found the problem at the processor and the memory level, and never found a chip problem on a recently functioning computer. Thats just bad luck if it happen to you.
 
The Dawg

[Firedawg]

dismantled every piece (see ebay listing # at very beginning of post for actual GOOD pictures) about 20-30 times.  in the end man i wish i knew.  i took out the buster chip, all ram, cpu card, HDD and ide cable, floppy and ribbon, highflyer expansion daughter card + zorro daughterboard.  eventually I guess it was highflyer expansion in and daughter card out then turned on while holding both mouse buttons.  then realized oops i forgot to put the zorro daughtercard back in, did that turned on again with no mouse buttons and boom it was floppy insert.  put in heimdall 2 aga version (for amiga 1200 it says on it LoL) and it booted.

i got a problem that i know is going to be easy still.  it's just kinda lame but i don't know anything about amiga so... why is my mouse click registering but not any movement??  i tried 2 mice :/

i m still dum

*chip only with floppy and only highflyer card, then turn on + 2 mouse buttons held, then turned off and inserted the other daughterboard (zorro one) and boom insert disk screen finally appeared.  turned off,  then proceeded to put the ide HDD back on there and boom, workbench 3.0.  time to grab some 3.1 roms now and a bunch of other stuff for it

Glad you got some life to show from your machine.  As Doctorq pointed out to you testing can be conducted without the daughterboard in place, to include the highflyer card.  You want to get that base configuration working, if not then you would know the problem would have been at the mainboard level.  

As for the mouse make sure you have in plugged in the correct port.

The Dawg