PUBLISON DHM 89 B2 Delay

[roginator]

This is greatest sounding delay I ever heard

I have 3 pcs BUT only one in my rack worx
I tried to get  schematics.... and publison dont give them.... so I bought some documentation of ebay.... JUST UPLOADED THEM TO groupdiy googlemail account
...

also I managed to read cca 85% of ICS ( on main PCB) ..all markings are sanded of but  ... take a part of day but worth it.......if somenbody open DHM 89 B2 please check for mising markings ..maybe that can be identified in your box..this I have is based on 3 boxes... so its 99% correct!!!!!!!!!!!!

that is loaded on [email protected] account

still have to do a big job to do all but I will make them work again

any info or documentation on PUBLISON DHM 89 B2 is welcome

Damir

 

[roginator]

recaped ONE and its working!!!!!!   

shortcuted tantals are mess


recaping list for Publison delay DHM 89 B2

TANTAL:
4,7uf / 35v  42pcs
.47uf / 35v  20pcs

ELECTROLIT:

10000 uf /25v  1pc
2200 uf / 35v 2pcs
220 uf / 35v 2pcs
22 uf / 35v 2pcs
10 uf / 35v 25pcs
1.5 uf / 35v 8pcs ( replaced with 2.2uf /35v)

its a borring job but worth it....102 caps

 

[roginator]

OK FOUND


RAM ICS IN PUBLISON DHM 89 B2

MB 8116 FUJITSU !!!!! 

THAT IS RAM USED IN MY PUBLISON WITH SHORY DELAY TIME ( LATER SERIAL 1959)
SO LOOKS LIKE 13 PIECES INSIDE !!!!!!!

ALSO POSSIBLE IN OLDER VERSIONS TO BE USED 4116 RAM ICS ( MAYBE ALSO THAT WAS USED IN MY EXPANDED VERSION....GIMME FEW DAYS AND ILL SEARCH THAT BETTER)

4116 AND 8116 ICS ARE 16K .......


SO CLOSE TO SOLVE PUBLISON DHM 89 B2 PARTS MISTERY!!

 

[roginator]

ALSO ABOUT PUBLISON DHM 89 B2 ...HERE : http://recforums.prosoundweb.com/index.php/m/80519/0/

 

[[silent:arts]]

good work.

all fixes I before did were replacing broken caps.
might be the reason they still pop up for repairs.
maybe a total recap will be best ...

 

[pierre245]

incredible !!!! is there someone here also who works that unit ?