Steamyrotter

Keith Many thanks Got your mail as well. There is slightly more damage than i first thought but getting there... Cheers

However when i finally tried it........................................ Not a dicky bird on the outputs so resigned it to the "things to sort out when i get time to look at it" pile and reverted to the analogue desk. Traced the problem to a faulty transistor and IC due to the old battery contents dumping themselves everywhere. :cry: Given a good cleanup and got chans 25-48 working but 1-24 are not playing. Found the problem but need the transistor number to replace. (Transistor supplying the LM324s pin 4.. Hope someone can help???? Cheers

Hi Keith Have now replaced the battery and hey presto. As you would probably expect, it now does what it says in the manual. Nice easy fix that. Next thing to do is ensure I have the leads set up right for our (sorry) Strand Act6+ racks, using the negative supply module. Going to try a little jiggery pokery with a VB prog I have written for our panto this year. Many thanks D.

Thanks for the reply. Yep Battery is flat!! 8O Shows 0.4v off and 6v when powered so definitely up the spout. Whilst there checked the bus volts and they look oK +-24v & 11v. I'll get a spare and try that, & let you know how i get on. I'll get a scope on the xtal after I have replaced the battery to prove/disprove that. Thanks

Hi Sorry to resurect an old thread. I have just obtained a Demux48 and seem to have similar probems with the start up. When powered up only the recieve and error leds light and then it displays 012. Nothing works after that. does exactly the same with and without a DMX stream flowing through.( although recieve LED illuminates ok so it is seeing something) Tried to change channels, and Scurves but nothing will play. Unit has one negative o/p board on the last 4 banks. Tried with this plugged in and out. Also removed the display board and reinserted to see if it's the connector but no change. Also checked resistance of the push buttons and they are good. Any thoughts?? Thanks in advance