Warm is norm, hot is not. If the test mode fails to work, you will have to check the voltages and waveforms on the Z80 and the eproms. The test mode is described in the Technical Manual on pages 31 and 32, although it's not referred to as the test mode. I don't know if you have the Assembly Manual, if you do, read page 19. The required modification for 2532 eproms is listed on page 2 of Appendix F of the Technical Manual, and page 16 of the Assembly Manual. Look at the bottom of the board, under U26 (monitor rom), and if you can see a cut track then it's already done. The other mod, involving some extra ICs, is detailed on page 14 of the Assembly Manual. edit: oops, i forgot to welcome you to 1emulation!!