Yamaha DM1000 Faders Replacement

Remove 5 screws:

Three screws for the lower part

Two screws for the upper part

Use a #4 Phillips screwdriver.

Remove sub-d connector from bargraph.

Remove 4 screws (2shorts/2 long) from metal bracket and mixing desk.

Remove 15 screws:

Remove 1 smaller screw

remove Phillip screw #2

Attention: these are self-tapping screws => risk of creating chips when screwing.

remove 16 + 1 fader with fingers or a with a plastic card.

remove 4 screws at the back.

remove 4 screws at the front (bad pic here).

remove carrefully from the side the 2 withe connectors.

remove carrefully 2 cables from the power unit, unlock first the connector.

open carefully the console from back to front by graping the sides.

open connectors and remove 5 cables.

you can now remove the upper part of the console.

Cut the plastic clamps. Their are 4 clamps in the corners and 1 clamp holding flat cable in place.

Unscrew the 10 screws with a Phillips #2 screwdriver.

For each fader remove the 2 blacks screws with a philips #2.

remove solder from 4 metal bracket that are fixed to the PCB from the cover.

remove solder with a pump from 6 pin of the fader.

remove solder from the 2 pin of the motor of the fader.

Replace transistors by new ones.

2SB1181.

2SD1733.

they are hard to find as the are being obsolete.

An idea from web forum from a Yamaha Technician that propose to add 4X 1N4148 diode by fader to protect the transistor. as free wheel.

add diode between base and collector as show here.