I recently bought a Beogram 1202 in excellent cosmetic condition as defective, but I discovered that after some minor adjustments it is working. But it has a very annoying problem that I can't solve and is driving me crazy: when I press the lift button, sometimes the mechanism works and sometimes it doesn't. When it doesn't work, the light comes on and the motor runs, but the mechanism doesn't activate the tonearm and I can't turn it off using the button, only by unplugging it. I've already disassembled it, cleaned all possible contacts and lubricated everything I could, and I don't know what else to do. Could it be the relay capacitor? I would appreciate any help in solving this problem. Thank you very much.