I know everything has been said about this legendary mainboard (but not by everyone).

I own a couple of those Baby-ATX babies and here´s about the latest inflow:

There are (at least) 3 versions in existence:
1. The full featured version with 1MB L2 cache and ATX + AT power connector
2. A version without cache and ATX + AT power connector
3. A version with 1MB L2 cache and only AT power connector

At the moment I´m repairing a Verision 3. one. It would only POST from time to time (depending on temperature) and then hang after HD-detection.
I decided to replace the shady electrolytics by some decent Rubycon and Panasonic ones and the mainboard would now start everytime but still hang. To rule out a BIOS issue I tried to upgrade to the latest version but this failed because the flash chip could not be identified by the flash utility.
Unfortunately the chip is soldered, so I fit a DIL32 socket in and inserted a new (already programmed) chip. Now the system would start with the latest (and 100% working) BIOS but still hang.
With L2 cache disabled it finised POST and I quickly found that one leg of the 2nd SRAM chip was bent and shorted and 3 legs of the first chip were damaged and broken directly at the chip.

I was able to readjust the bent pin of chip 2, then I removed chip 1. It´s a UMC "UM61 L 6464AF-5" a 512K chip with 5nS access time.
I have some TM Tech "T35L6464A-5Q" chips on stock and gave it a try.

Everything´s working fine now, cachechk, CTCM7 and benchmark tools don´t show any errors.
I´m still not sure if this configuration with mixed L2 chips could cause any problems. Has anyone here had this constellation before?

Next I will add the missing ATX power-connector.