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Newbie building compact PSU |
Blinkar blå
Common Wiggler
Joined: 11 Oct 2009
Last Visit: 21 May 2013
Posts: 116
Location: Sweden
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 Posted: Sat Jun 04, 2011 11:52 am Post subject: Newbie building compact PSU |
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and I can't even get the AC light to turn on 
So I took some readings w. my cheap multimeter
(red probe @ AC2, wallwart is 18V AC):
R7 1: 8V
R7 2: 7,5V
D1 2: 8V
D1 1: 0,1V
RED 1: 0,1V
C1 1: 0,1V
RED 2: 0?
C2 2: 0?
Replaced D1, but got the same result. Any ideas?
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Synthbuilder
Super Deluxe Wiggler
Joined: 24 Mar 2009
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| Posted: Mon Jun 06, 2011 4:59 am Post subject: |
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Can you post a small photo of your wiring to the power supply board?
Have you connected your power pack into AC2 and 0V2? If that doesn't light the LED the power pack is either dead or the LED is around the wrong way.
Tony
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Blinkar blå
Common Wiggler
Joined: 11 Oct 2009
Last Visit: 21 May 2013
Posts: 116
Location: Sweden
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| Posted: Mon Jun 06, 2011 10:33 am Post subject: |
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Yes, I'm using AC2 & 0V2.
What's weird is that there seems to be no connection between AC2 & R7, but there is between AC1 & R7? Checked with an ohmmeter (also the AC light lights up when I put a voltmeter between AC2 & R7). The backside of the PCB:
Should I try AC1 instead, or did I miss something here?
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Synthbuilder
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| Posted: Mon Jun 06, 2011 11:45 am Post subject: |
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| Blinkar blå wrote: | | Should I try AC1 instead, or did I miss something here? |
Er... yes. The schematic and the wiring diagram is wrong.
That's been like that for three years. I assume most folk have been using the full wave version!
I'll get the User Manual and schematic updated straight away. In the meantime use AC1 and 0V1 and your power supply should work just fine.
Sorry about that.
Tony
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Blinkar blå
Common Wiggler
Joined: 11 Oct 2009
Last Visit: 21 May 2013
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Location: Sweden
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| Posted: Mon Jun 06, 2011 12:52 pm Post subject: |
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Hey, this means I built something that actually works!    
Must buy more PCBs! 
I can't see the schematic in the PDF. Maybe it's my viewer or something?
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Synthbuilder
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| Posted: Tue Jun 07, 2011 1:44 am Post subject: |
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| Blinkar blå wrote: | | I can't see the schematic in the PDF. Maybe it's my viewer or something? |
Remember the schematic is to be separately downloaded. The link would have been given to you with the shipping e-mail. But don't do that - I haven't uploaded the new version to the server yet.
I am doing things differently to Paul at Krisp1 though. I send the files direct to purchasers in the shipping e-mail. This saves all the bother with non friendly files names and passwords.
Send me an e-mail (not PM) and I'll send you a copy of the corrected schematic.
Tony
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