On 06/09/2013 20:40, Cydrome Leader wrote:
N_Cook wrote:
On 05/09/2013 15:06, Gareth Magennis wrote:
"N_Cook" wrote in message
...
Sony DAT audio DTC 690 drum assembly/ DOU-03A/ 8-848-567-11
Initially, anyone know how to get the top drum off, I don't want to heat
up to separate interference fit , if there is some secret fixing.
Then anyone happen to know if video heads are the same, they look the same
via what little I can see of them.


BTW, if you remove the head or move anything else, you will need to realign
the tape path, and you won't be able to do that properly without an
alignment tape.

Ideally you also need a tension tape to measure and adjust back tension.



Gareth.



I can't make things worse. Smashed up heads, probably from foam breaking
up / snagging on the silly "head-dirtier" arm

nice.

just curious, who even sells DAT heads, let alone in 2013?


Available at Megabucks.
Discovered one thing, so far. There are 2 magnets on the disc I removed.
The disc is probably mu-metal with strong 6 pole motor magnet below and
a weak thin disc above to energise a castellated pcb track for a tacho.
I suppose the mu-metal is to stop the rotating main field from directly
coupling with the heads or the transfer coils,one pair is static and one
pair rotating relative to the magnets wheras the video heads are static
relatively speaking, and the weak one is too weak to affect more than a
couple of mm away from it