BenEdwards Posted October 14, 2016 Share Posted October 14, 2016 We recently got a Sirus 24 and after a lot of maintenance got it working. There is one very strange oddity. When it is first turned on a lot of the LEDS come on and it does not work. If it is then turned off and on again it is OK. If it is turned off and pn without waiting very long it is OK, its generally when it is left overnight it has to be done twice. Can anyone shed any light on this? I know its what we do:). Ben Link to comment Share on other sites More sharing options...
jmdh Posted October 14, 2016 Share Posted October 14, 2016 I had almost the opposite problem with a borrowed Sirius 24 I used recently. It worked fine for several hours and then suddenly went into the state you describe. Power cycling it would sometimes get it to last another few minutes and then it would fail again. Didn't have a chance for any detailed examination, we just had to get a replacement sharpish. Link to comment Share on other sites More sharing options...
J Pearce Posted October 14, 2016 Share Posted October 14, 2016 Sounds like a dead battery. The first switch on is probably long enough to charge the battery to allow it to initialise on the next power cycle. Link to comment Share on other sites More sharing options...
BenEdwards Posted October 14, 2016 Author Share Posted October 14, 2016 Sounds like a dead battery. The first switch on is probably long enough to charge the battery to allow it to initialise on the next power cycle. Battery has been repaced. Link to comment Share on other sites More sharing options...
david.elsbury Posted October 14, 2016 Share Posted October 14, 2016 Was there any corrosion from a previous leaking battery? Link to comment Share on other sites More sharing options...
BenEdwards Posted October 14, 2016 Author Share Posted October 14, 2016 Was there any corrosion from a previous leaking battery? There may of been, I did not do it. Hr spent time cleaning and checking the boards. They guy who did it had to spend around a day getting it working. there were some broken tracks etc he soldered micro-wire to fix. too a couple of attempts to get it working. Link to comment Share on other sites More sharing options...
ianknight Posted October 15, 2016 Share Posted October 15, 2016 I would check the battery yourself - they can "short life".. There's also a couple of vital tracks under the battery that sometimes go unnoticed when there's corrosion from leaky batteries - I've also had it before when acid has crept along the tracks below the battery, you might find there's more corrosion now. After that I'd be looking at the power supply voltages - it's a basic linear PSU in the Sirius so nothing terribly complicated to prod but check the capacitors for bulging too whilst you're looking. Link to comment Share on other sites More sharing options...
BenEdwards Posted October 18, 2016 Author Share Posted October 18, 2016 Thanks everyone. although it has to be turned on and off before working seem to be OK. I don't want to take it to bits as if it then did not working my name would be mud. Will have ot do for now until we can get funds for something better. Its a volunteer run venue and we all have limited time and money. Link to comment Share on other sites More sharing options...
Don Allen Posted October 18, 2016 Share Posted October 18, 2016 If it is battery corrosion, it will eventually eat through the tracks, so when it stops working, you will need some fine soldering to bridge the open circuit tracks with small guage insulated wire. There may be vias involved. Link to comment Share on other sites More sharing options...
alistermorton Posted October 19, 2016 Share Posted October 19, 2016 As DrV found when he checked out my LBX - tracks that were so badly corroded they were just black dust. On a 4 layer board that made it past economical repair Link to comment Share on other sites More sharing options...
Peter18 Posted October 19, 2016 Share Posted October 19, 2016 Fortunately the Sirius only has a double sided pcb but even so it can present an interesting challenge.Here are some before and after photos of one I worked on a year or so ago, I guess Ben's will be similar! http://s1297.photobu...r?sort=2&page=1 Link to comment Share on other sites More sharing options...
vinntec Posted October 19, 2016 Share Posted October 19, 2016 However - and I loved our Sirius 24 in the old days - ignoring this fault is just asking for trouble. It will let go when you least want it to, such as in mid production! It sounds like it is probably repairable by someone who knows what they are doing, so you should find that someone nearby and make an appointment to have the desk looked at - as soon as the current show is over at least? Bristol is not far from where Zero 88 are (or at least used to be) so that might be the first obvious phone call to make? Link to comment Share on other sites More sharing options...
BenEdwards Posted October 21, 2016 Author Share Posted October 21, 2016 Thanks. Mike Shaw is the guy we use to fix stuff and he is very well known around here and seems to have a good reputation. With a desk this age its a case of working how long/much money it is worth spending on it before we decide its not worth fixing. So far its have 2 half days spent on it. On each case it seemed to be working them shortly afterward developed another fault. Problem is there is not mutch aptitude for spending money on lighting. We have recently gone from 12 to 24 channels but money is tight as we have spent a lot this year on a self-funded refit. to get it working it has to be turned on, turned off and turned on again. The first time it is turned on it goes in a state where all the channel, and some other, LEDs come on and it is not responsive. Last night it was left in this odd state for a log time as the person who turned it on did not realize. It had turned on a lot of channels full and was not working. Had ot do a clear all and it seemed to work. I am worried it is going to play up mid-show;(. Ben Link to comment Share on other sites More sharing options...
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