Odd light matrix problem on ToM

[Spadge]

So I've had a weird light issue on my ToM and any comments regarding possible fixes would be useful.

Firstly I've removed the following mods; Magic Hat/Card, the Tiger Saw/Marquee mirror, light in the magic crate.

So the problem is that every light in any column also triggers the corresponding light in column 2 of the matrix.

So for example the first in the matrix, [T]heatre will light Ma(G)ic, T(h)eatre will light Magi(c) etc.

When any column 2 lights in the matrix are tested, they are fine,

My assumption is that it's a diode issue, but thats at the extent of my current knowledge

 

[chris b]

is the tom leded i have had problems like this with cheep leds also have you done any soldering recently and dripped on a connector

 

[Spadge]

Yes, TOM has been led'd a while (I think this problem goes way back). No soldering no.

I've got pretty good leds in there now (non ghosting).

 

[Moonraker]

Consult the manual, pages 3-26 to 3-28 and check that you don't have an extra connection that is not listed. If you find one then disconnect it and the problem will go away. Otherwise it may be an errant diode which would require you disconnecting each diode and testing which would be a real pain. It may also be prudent to check the wiring of those affected in case a wire came off and someone soldered it back on in the wrong place (although I'd expect that to show up in test and probably a diode issue).