paul_5 Posted July 23, 2012 Posted July 23, 2012 Anybody ever left one of these plugged in for a few days straight? My mate did to mine, and now I can't power it up. first of all: 1) don't do this to yours and anybody ever fixed one? I've checked the usual suspects - visual damage to PCB tracks and components, but nothing so far. Mains supply is still delivering everything that it should, but most of the board isn't getting any juice. I [i]could[/i] go through each component with a meter to see where the current stops, but if anybody has any suggestions then you could save me a couple of hours probing (leave it!). Any suggestions or concubines gratefully received. Quote
paul_5 Posted July 23, 2012 Author Posted July 23, 2012 the wha? Not seen anything that looks remotely like a battery inside there, but then again I am [i]sometimes [/i]wrong... Quote
BigRedX Posted July 23, 2012 Posted July 23, 2012 IIRC it is programmable and therefore should have a small battery (normally "hearing aid" type) somewhere inside. Have you also tried resetting it on power up? Before you try this remember that it will wipe any user patches. Quote
ahpook Posted July 23, 2012 Posted July 23, 2012 my midiverb three (which i loved to pieces) went to the big rack in the sky because of a power problem. iirc the 9v AC supply is rectified after coming into the unit - maybe one of the caps or diodes has gone ? sorry - i know you say you've checked the components, but this is where i'd start my peering. g'luck ! Quote
paul_5 Posted July 23, 2012 Author Posted July 23, 2012 Yeah, tried the reset on power up thanks, but still nothing. Wasn't worried about losing presets as most of the parameters are automated through MIDI anyway. Not seen a battery, so I'm assuming one (or more) of the ICs is an EPROM - not sure if this would need a battery or not. I reckon ahpook's right though - I'll be doing a one in, one out with the PSU corner of the board tonight. Caps and diodes, caps and diodes etc... (sigh). Quote
BanditSid Posted July 23, 2012 Posted July 23, 2012 Paul, I have a schematic/service manual for the Midiverb 3, PM me your email address and I'll send it to you. Quote
paul_5 Posted July 23, 2012 Author Posted July 23, 2012 Hi Sid, thanks for your offer, but I found a pdf of the service manual online earlier this evening. What a great community BassChat is. Quote
paul_5 Posted July 23, 2012 Author Posted July 23, 2012 Turns out it was just a diode on the +5v power supply rail. Easy fix really. Quote
ahpook Posted July 23, 2012 Posted July 23, 2012 [quote name='paul_5' timestamp='1343083078' post='1745147'] Turns out it was just a diode on the +5v power supply rail. Easy fix really. [/quote] /crowd goes wild/ well played that man ! Quote
ahpook Posted July 24, 2012 Posted July 24, 2012 there's nowt dull about soldering ! one of my favourite smells is solder Quote
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