Custom paint job ZOOM MS-70CDR

Got a ZOOM Multispomp MS-70CDR on the workbench for a custom paint job.

Zoom MS-70CDR customizing
ZOOM MS-70CDR

Opening it up we see that it consists of six circuit boards. One for each set of 6,3mm jacks, two for the for the switches and one for the pots .

Zoom MS-70CDR guts
ZOOM MS-70CDR guts

The motherboard holding the ZFX-3 DSP.

Zoom MS-70CDR guts
ZOOM MS-70CDR DSP

Everything removed but the display and the mechanical parts for the switches.

Zoom MS-70CDR guts
ZOOM MS-70CDR guts

Finally the chassie with everything removed.

Zoom MS-70CDR chassie
ZOOM MS-70CDR chassie

/Krister

Laney Klipp 100 service

I’ve starteed working on the Laney amp as mentioned in an earlier post found here. I had it recapped and with no tubes, slowly brought it up to main voltage. Here’s a picure of them new caps.

Laney Klipp100
Laney Klip 100

Here’s the preamp section.

Laney Klipp100
Laney Klipp 100

As it has fixed bias but not adjustable I added a bias pot and measure points accessible from the outside on the back of the amp as seen closer in this image. I’ve also installed new 1K screen resistors instead of the 470R :s.

Laney Klipp100
Laney Klipp 100

Here’s the back panel with the bias pot and the measure points.

Laney Klipp100
Laney Klipp 100

Time to power it up with tubes, I had the bias voltage set to -54VDC as in it’s original state. Checked with dummy load and scope and all voltages are in specs. Also changed a few resistors and the master volume pot installed before I recieved it.

Laney Klipp100

Now I just hope it plays as it should, well see.

/Krister

Bull

Here’s the first prototype of the zeta sound BULL. With red indicating led and red knobs.

Bull pedal
BULL
Bull pedal
BULL

The circuit board

BULL circuitboard component side
BULL circuit board
BULL circuitboard solderside
BULL circuit board

/Krister

Laney Klipp 100

An old Laney amp that needs som tendering.

Laney Klipp100

Blows the main fuse. Tinkered with as it has a master volume pot installed and traces of other activites.

Laney Klipp100
Laney Klipp100

Components close up.

Laney Klipp100
Laney Klipp100
Laney Klipp100
Laney Klipp100

Checked the power transformer and it seems to be functional. I’ll start with recapping them old electrolytes.

/Krister