Hi all, first time in as registered member and have bought a TN with 124k on the clock original. Have a few niggling probs - voltmeter doesn't work, tempguage barely moves ( open thermostat?) fan works on 3 only, speakers have died - distort like any thing with original unit. How do I get to the damn speakers to replace them? Are they 4 inch?

Help needed here

Rick - the old man