Dead AIM ^%??

Well, I tried the next steps, with my limited equipment, and no joy. Here's what I've tried so far, 1. visually inspect - looks OK, nothing obvious like cracked or discolored components 2. check power supply - OK 3. check voltages on board - OK 4. remove extra ROMs 5. check clock with analog VOM - did not appear stuck high or low 6. check low addess lines with analog VOM - did not appear stuck high or low 7. remove all but low order RAM 8. swap RAM to try to find if bad zero page RAM - could all 8 RAM be bad? 9. feel parts for heat - nothing extraordinary, all appeared cool to touch I have an offer of someone (he's got 6 AIMs) I can mail it to, and he said he would look at it, but if there is something I can do here I would not have to impose on him. Any more ideas, or have I reached the end of what I can do here? BTW: I am not comfortable with de-soldering and soldering, it's just been too many years. I'm out of practice. So let me know anything you think I can try (W/O solder) and I'll try. Thanks again for such a wonderful response. Later, AndyD