Hello all! I recently received a Packard Bell Legend 1956 desktop computer. This PC has an Intel 486 DX2-50 CPU and (2) 16mb 72-pin SIMMS. Unfortunately, while it was sold as a functional PC, when it arrived at my house I found that it was no longer working. I quickly discovered that the original CMOS battery had corroded and probably damaged the motherboard. Initially upon power on, I would get nothing. There were no error beep codes and nothing was display on the monitor. I tested the SIMMS and CPU in another Packard Bell PC I have here and they work fine. I have since cleaned the board with isopropyl alcohol in an ultrasonic cleaner and neutralized the corrosion with white vinegar. Finally, for good measure I used some good flux on a couple of problem areas and then reflowed the entire board in my oven. At this time, it still is not fully functional, but some progress has been made. I was hoping someone on these forums might have some ideas of what to look at next.

After all the above, now when I power it on, I get the following:
• Onboard Ram disabled & (2) 16mb 72-Pin SIMMS installed = (3) Long Buzzes & (2) Short Buzzes
• Onboard Ram enabled & (2) 16mb 72-Pin SIMMS installed = (3) High Pitched Beeps
• Onboard Ram disabled & no SIMMS installed = (3) High Pitched Beeps
• Onboard Ram enabled & no SIMMS installed = Nothing

I next tried inserting a Kingwin CMBA-4 ISA PC Analyzer card. Prior to the work above, I saw all sorts of random codes displayed, with no 2 posts showing the same codes. Now I get the following codes every time I power it on with the onboard ram disabled & the 72-Pin SIMMS installed.

66 --
01 58
02 01

However, I am not familiar with this analyzer and therefore are not sure what the codes are indicating. Do any of you have any ideas or suggestions based on what I have found thus far? Is this board even salvageable at this point? This is just like my first IBM compatible PC from back in high school, and sadly they seem to be dying off. I would love to save this one from the scrap yard if at all possible. Thank you for your time!