Hi! I bought a philips d8554 on e-bay last week for £5.50.I couldn,t believe my good fortune.The item turned out to be in first class condition and with no faults. I have cleaned all switches ,controls & tape heads. It now looks and sounds superb. Needless to say i am highly delighted! I also bought a philips d8734 on e-bay in beautiful cosmetic condition for £40.00, it was all working. Alas the tape transports have stopped working and need new drive gears which are now obsolete. "(Does anybody know where i might try for spare parts or mechanisms?)"