mike f Posted May 23 Posted May 23 My Boss LMB-3 has died on me! It’ll only come on if sideways force is applied to the power supply lead. It goes off as soon as this force is taken off. Anyone have any suggestions as to what I can do? Thanks Quote
neepheid Posted May 23 Posted May 23 (edited) 1 hour ago, mike f said: My Boss LMB-3 has died on me! It’ll only come on if sideways force is applied to the power supply lead. It goes off as soon as this force is taken off. Anyone have any suggestions as to what I can do? Thanks Crack it open. See what's happening around the power jack. If you're lucky you could reflow the solder joints, if unlucky and the socket is actually broken then it could probably be easily replaced. If super unlucky, and the power socket is attached to a board, the board has had a mischief befall it such as a crack, a broken trace or a solder pad come away. That's less fun. You might be able to bodge around it. Edited May 23 by neepheid 1 1 Quote
neepheid Posted May 23 Posted May 23 From this pic I found online, the socket does appear to be soldered direct to the main board... 1 Quote
mike f Posted May 23 Author Posted May 23 @neepheid thanks man. I’ve had a peek inside and I think it’s cracked. The soldering around it looks unhealthy, milky white. Quote
neepheid Posted May 23 Posted May 23 1 minute ago, mike f said: @neepheid thanks man. I’ve had a peek inside and I think it’s cracked. The soldering around it looks unhealthy, milky white. Got any pics of the offending area? Quote
mike f Posted May 23 Author Posted May 23 10 minutes ago, neepheid said: Got any pics of the offending area? I’m just heading out to work for the weekend. I can send a picture on Sunday when I get back. Really appreciate you taking the time to respond. Thank you 👍 1 Quote
neepheid Posted May 25 Posted May 25 27 minutes ago, mike f said: @neepheid Doesn't look too bad - you might want to clean up that milky looking area with some IPA (isopropyl alcohol, not india pale ale, lol). Solder joints look solid enough, so my money is on the DC jack itself having failed. I'd replace it. 1 Quote
mike f Posted May 25 Author Posted May 25 47 minutes ago, neepheid said: Doesn't look too bad - you might want to clean up that milky looking area with some IPA (isopropyl alcohol, not india pale ale, lol). Solder joints look solid enough, so my money is on the DC jack itself having failed. I'd replace it. Yeah I’ll look for a replacement. Thanks again for your time 👍 Quote
LukeFRC Posted May 25 Posted May 25 What Neepheid said - solder looks ok, if it's fixed when wiggled its mechanical and needs a new jack socket... 1 Quote
itu Posted May 26 Posted May 26 For me the power connector solderings looks bad. Try to move it, and look at the surface where solder meets the board. Are they broken? Quote
mike f Posted May 26 Author Posted May 26 1 hour ago, itu said: For me the power connector solderings looks bad. Try to move it, and look at the surface where solder meets the board. Are they broken? I can’t see any breakages but there is definitely movement in the block that is the input. Quote
itu Posted May 26 Posted May 26 Check these areas with care while moving the connector. Good light helps. 1 Quote
bertbass Posted Tuesday at 11:14 Posted Tuesday at 11:14 Wouldn't hurt to just re-solder the connections first, then you'd know whether it's a bad socket or not. 2 1 Quote
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