MUX_SH board mod tutorial

Today I built 4 mux boards and only one works at IC111 so now for me I'm going to going down the route of bad SMD practices. This afternoon I desoldered all componants from 10 mux boards and I've found a local electronics engineer who will do the work for me. Hopefully this will put to bed a lot of speculation - from myself - and they will all come back working.

Whats this Mod Vincent? Red wire on IC115.

hofmann25 wrote:Whats this Mod Vincent? Red wire on IC115.

My guess: a broken trace.

KlangGenerator wrote:
hofmann25 wrote:Whats this Mod Vincent? Red wire on IC115.

My guess: a broken trace.

Probably but this is Vincen'ts kit and I would doubt(Hope) he didn't break them like all of us.....

Since this is one of the poorly engineered early PCB version, I doubt that a broken trace couldn't also happen to Vincent.

The wire is connected between PIN3-8. Looking at the bottom layout these two pins are connected by a trace. So that red wire replaces the trace.

KlangGenerator wrote:The wire is connected between PIN3-8. Looking at the bottom layout these two pins are connected by a trace. So that red wire replaces the trace.

Roger that sherlock

I finished this Mod. Firmware Nava_v1_027.

Machine does not work anymore. Nothing. Not a sound.........

I had the same issue.. it was the connectors, I connected a - to +. Maybe you did this too ?

No. Visually and continuity checked to the header. Only thing I did different to Vincent's guide was hook up the right board to the closest + G - pads.