"Phil Allison" wrote in message
...

** One for the tape gurus .....

See ABSE under same heading for close up pic of a quarter inch play head
from a Roland tape echo machine -
the other two play heads and the record head look just the same.

A. What the heck happened ?

**Nasty. The bottom part of the head is showing (sort of) normal wear. The
top part is showing some really weird wear pattern. I have no suggestions
why it may have occured that way. I presume the tape loop is completely
buggered?


B. What is the easiest way to re-surface the heads ?

**Replace them. I doubt there is enough metal there to allow re-lapping with
any success. You could try BrassoT and complete the job with SilvoT. The
damage is so bad that I doubt that the time taken will make it worthwhile.
You may need to hit it with [SHUDDER] wet and dry (600) first.

How old is that machine? I worked on them about 30 years ago for Roland. I
think I still have a complete set of Roland service manuals from the time.


--
Trevor Wilson
www.rageaudio.com.au