Re: Revox A77 doesn't erase
OK - various points now seem all OK.
My comment about the alignment of the tape refers to the 'curve' of the path of the tape over all three heads. The tape should cross each head such that the head gap is central to the contact of the tape over the head. If the next head (the RECORD head) is projecting slightly from it's correct position, it may alter this curve so that the tape contact is slightly out, and this may be enough to affect the performance of the erase head.
From what you say, the erase head should be working electronically, but for some reason it's not doing the job magnetically. It is doing something, it seems, but not enough. You say you've cleaned it fully. If the other heads were worn enough to need lapping, another question could be - is there any hint of any damage to the surface of the erase head? Specifically where the head gap is?
Geoff
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