I'm using regulated power supply taken from mac lc rated as 4.5A on 5v. Voltage = 5.01V constantly. Replaced GTIA, no effect. Replaced 74ls08 with 74f08 no effect. Replaced MMU (PAL16L8 (?)), no effect. Replaced all stabilizing capacitors on DRAM chips, no effect. Added 1K resistor from 5V to 1 pin of 74f08 to make clock signal better. Added 220pf capacitor to R/#W signal to get rid of HALF 0 HALF 1... no effect.
I think I have defective Sally... but it works good at the start. I don't have replacement of Sally for the moment.
About, temperature of chips, well they are warm, I think all with same temperature.