No bother. Let us know if you need any help with it.
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New guy here with yet ANOTHER question! I hate asking questions, but I’m truly stuck and don’t know where to go from here. I really do appreciate all of you guys! I’ve only been on the forum for about 2 weeks but I literally read and search here daily!
Alright - I had my power supply working great earlier! I went to unplug the ribbon cable and must have jostled something around. I saw a spark and then the +5v and +12v LEDs went out. I suspect that some pins on the unshrouded header must have touched each other? I replaced the unshrouded header with a box header and the LEDs came back on. However, when I measured with my multimeter, I measured -12v, +5v, and +15v. I replaced the voltage regular on the +15v side just to be safe, and I’m still measuring +15v. When plugging the power supply into the module (VCO 1222), the +5v and +12v LEDs go off, and the module does not turn on. Could I have potentially damaged a component on the module PCB in the process? What else should I check on the power supply PCB? It was working great earlier before I screwed it up 
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Hi All,
I’m hoping someone can help confirm my understanding. I have two FC Microbus connected to one power supply in parallel (picture for reference). They are currently connected to a 1000mA 12V AC wallwart which works fine but I am outgrowing it. I want to use a 2000mA 12V AC wallwart instead. Is ok? I emailed Frequency Central earlier this week and waiting to hear back. Thanks!
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These use 7812/7912 regulators; the datasheet says they can supply 1.5 A but more like 1.0 A is probably more realistic. That’s each and between the two boards there are four regulators, so you can imagine them being good up to a total of 4.0 A. Ideally.
The web page Microbus – Frequency Central says a 1000 mA wall wart but that’s for a single PSU, so 2000 mA feeding two PSUs should be okay.
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Same issue as some others here - I had the right voltages in the right places, but no LEDs were lit. I had the LEDs reversed. Fixed that and all looks good now.
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My motto: never blindly follow the silk screen. Always keep the schematic near. Especially when caps are involved.
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yep, because unlike baseball caps, some matter which way they go round lol.
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Oh there’s a difference; not judging:)
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