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The voltage across C9 and C10 should be the same as the voltage at the output terminals.
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S2 looks like from the Bottom of the board voltage I will be able to Turn it in S1 voltage drop issue after C5 Originally Posted by: Russ White  The voltage across C9 and C10 should be the same as the voltage at the output terminals. Datazone attached the following image(s):  DC-out-S1.jpg (187kb) downloaded 18 time(s). C9-Value.jpg (211kb) downloaded 18 time(s). C3-Value.jpg (248kb) downloaded 16 time(s). C5-Value.jpg (202kb) downloaded 6 time(s).You cannot view/download attachments. Try to login or register.
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S2 before V tuning PICs Originally Posted by: Russ White The voltage across C9 and C10 should be the same as the voltage at the output terminals. Datazone attached the following image(s): DC-out-S2.jpg (216kb) downloaded 9 time(s). C10-Value.jpg (212kb) downloaded 13 time(s). C6-Value.jpg (244kb) downloaded 11 time(s). C4-Value.jpg (229kb) downloaded 4 time(s).You cannot view/download attachments. Try to login or register.
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If you adjust the pot does the voltage at C9/10 get to 5.5V?
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Wire from C9 to the output terminal (on the bottom side - so remember its flipped) as in the pic and you should be fine. Edited by user Wednesday, January 30, 2013 1:54:32 AM(UTC)
| Reason: Not specified Russ White attached the following image(s): pic.jpg (103kb) downloaded 30 time(s).You cannot view/download attachments. Try to login or register.
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S2 5.5V Good....... :)) S1 fail Originally Posted by: Russ White If you adjust the pot does the voltage at C9/10 get to 5.5V? Datazone attached the following image(s): DC-out-S1-5.5V-Fail.jpg (242kb) downloaded 11 time(s). DC-out-S2---5.5V.jpg (238kb) downloaded 15 time(s).You cannot view/download attachments. Try to login or register.
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The S1 Fail PIC was sent before I tried your Jumper Repair.. Originally Posted by: Datazone S2 5.5V Good....... :)) S1 fail Originally Posted by: Russ White If you adjust the pot does the voltage at C9/10 get to 5.5V?
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Hello Russ, Take a look at the jumpers from C9 to DC out Please let me know if it looks OK. thanks Dave Originally Posted by: Russ White See my post above. :) Datazone attached the following image(s): S1-with-Clippers.jpg (229kb) downloaded 33 time(s).You cannot view/download attachments. Try to login or register.
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Hey Russ, S1 is producing 12.41V DC now... But it will not allow me to adjust the voltage via the trim pot? I guess I'm a little confused why we added the jumpers and by passed the trim pot. Do you have any ideal why we lost voltage after C5 I never tested C7. I know I'm only using one side of this PS for the Buffalo IIIse so having the second side work may be a moo point anyway. Thanks Dave Originally Posted by: Russ White Looks good to me. :)
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It is not really bypassing the pot. The pot is connected via the upper trace. You may only need one half, that is true. Basically all we are doing is replacing an upper trace with a jumper to the terminal. :) Edited by user Wednesday, January 30, 2013 2:55:39 AM(UTC)
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Looking back at your drawing -- was I supposed to run the GND from the C9 thru the Trim pot post and then connect to the GND post? Originally Posted by: Russ White It not really bypassing the pot. The pot is connected via the upper trace. :)
You may only need one half, that is true. :)
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No. Direct from the cap pad as it looks like you have done. Edited by user Wednesday, January 30, 2013 3:05:54 AM(UTC)
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 1 user thanked Russ White for this useful post.
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Over and Out - looks like I'm ready to connect to the Buffalo 3se and IVY 3 ... Originally Posted by: Russ White No. Direct from the cap pad as it looks like you have done. Edited by user Wednesday, January 30, 2013 3:15:44 AM(UTC)
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Good to see you made progress Dave!
Now you have to clear out your PM box; it is full and won't receive messages. |
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Hi!
I'm getting kind of the same problem here with my LCDPS.
DC Out is 11.2V on both outs.
I've read the whole post and made the measurements which you can find the results below.
I'm using the 9V / 15VA trafo on 230V (grey + violet connected together).
AC IN black/red: 10.15V
AC IN orange/yellow: 10.15V
A1: 10.3V
A2: 10.3V
C1: 10.15V
C2: 10.15V
C3: 12.8V
C4: 12.8V
C5: 12.8V
C6: 12.8V
C7: 10V
C8: 10V
C9: 11.2V
C10: 11.2V
D1: 1.45V
D2: 1.45V
D3: 1.14V
D4: 1.23V
DC OUT1: 11.2V
DC OUT2: 11.2V
Important points : IC1 and 2 are keeping cool, VR1 and 2 have no effect on DC Outs.
I can take pics if needed :)
Thanks for the help.
Cheers,
neofeed
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Originally Posted by: neofeed Hi!
I'm getting kind of the same problem here with my LCDPS.
DC Out is 11.2V on both outs.
I've read the whole post and made the measurements which you can find the results below.
I'm using the 9V / 15VA trafo on 230V (grey + violet connected together).
AC IN black/red: 10.15V
AC IN orange/yellow: 10.15V
A1: 10.3V
A2: 10.3V
C1: 10.15V
C2: 10.15V
C3: 12.8V
C4: 12.8V
C5: 12.8V
C6: 12.8V
C7: 10V
C8: 10V
C9: 11.2V
C10: 11.2V
D1: 1.45V
D2: 1.45V
D3: 1.14V
D4: 1.23V
DC OUT1: 11.2V
DC OUT2: 11.2V
Important points : IC1 and 2 are keeping cool, VR1 and 2 have no effect on DC Outs.
I can take pics if needed :)
Thanks for the help.
Cheers,
neofeed
Check your diode orientation
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Tried my LCBPS yesterday and remembered what happened with the LCDPS as the same occurred with both LCBPS. Plugged the trafo in and switch it ON : in less than 10 seconds, the LCDPS (and so did the LCBPS at first time) got very hot (heatsinks and boards). So hot that I could bearly put my fingers on the heatsinks. Is that normal ? Don't think so but why ? Thing is now, when I switch on the LCDPS, the board and heatsinks are keeping cool, no matter how long I let it powered ON. Edited by user Monday, November 4, 2013 11:41:13 AM(UTC)
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