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Old 2nd October 2006, 02:42 PM   #1
wayle45 is offline wayle45  United States
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Default Proceed Pav Schematic

Do any of you techies have knowledge of the Proceed Pav preamp? I thought I was upgrading the unit by replacing some high ESR caps. The unit no longer functions. Is it possible that these 68uf caps with ESR values of 10 ohms are required in the circuit to work with the IC's? Help!
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Old 24th January 2007, 01:46 AM   #2
B&Okie is offline B&Okie  United States
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Wayle45 and others,
Did you get any help? I am looking for some Proceed PAV help also. Actually I just need a remote or to find a universal that works well with the PAV. If you can be of any help, I would appreciate it.
Thanks,

B&Okie
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Old 24th January 2007, 09:42 AM   #3
Gordy is offline Gordy  United Kingdom
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While I can offer no direct advice, I note that using the search facility for Proceed AND Preamplifier just netted me 35 hits, so if you do the same and trawl through those posts you may uncover people that may be able to help you (...who for whatever reason missed your original question).

Just a thought.
G.
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Old 24th January 2007, 08:09 PM   #4
wayle45 is offline wayle45  United States
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B&Okie: Hi, I found that a "One For All" URC 8910 learning remote works decently. You should be able to control many functions as well as the volume. I found one online for about $26 shipped. The amp code is 1912. Don't expect to get every funtion- and ,yes, you'll need to work with it a bit. Good luck, Wayle45.
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Old 26th January 2007, 08:25 AM   #5
PWatts is offline PWatts  South Africa
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10ohms ESR is damn high. I would imagine they should be so high for a reason. Some LDO voltage regulators specify a minimum ESR cap following them in order to protect their output stages during startup while the caps charge. It may be possible that you've blown something by the higher inrush current required by the low-ESR ones. Measure the voltage at the caps and before the regulators (or whatever precedes the caps) and see what happens.
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Old 26th January 2007, 07:40 PM   #6
wayle45 is offline wayle45  United States
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PWatts: Thanks for the response. The Pav had a bad bridge rectifier which would blow fuses at startup. I replaced it and the bad caps.
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Old 5th February 2007, 03:07 PM   #7
B&Okie is offline B&Okie  United States
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Default Thanks

Thanks Wayle45. I will check it out.
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Old 6th September 2013, 07:11 AM   #8
jlithen is offline jlithen  Finland
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Default I also have issues with a PAV

I have "borrowed" the same amp.
Owner says I can buy it cheaply, but did not say how cheaply.

It sounds fabulous.
Remote is not original, but some universal model ordered from Hungary recently.
Unit is not possible to turn off in any way, but it is possible to turn it on from the fromt panel... (hardwired switch in the back will of course turn it completely off)
I can select source and adjust volume, but not choose mode or adjust balance.
Should I be able to choose mode or adjust balance when inputting a normal stereo signal? (I think and hope so)
If I connect a projector to the composite output it gives me a blue screen and nothing else. Should volume or something be displayed in the OSD?
When I opened it up I found a loose screw rolling around, a swollen cap and a 2wire cable hanging loose. (very thin black one, is it some antenna???)

If the issue is with some processor it is a rather lost case, but if some supply voltage is bad or so I could do some measuring with a scope and recapping et.c.

Anyone know anything?
It has very many supply voltages
All help highly appreciated!
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Old 2nd June 2014, 06:07 AM   #9
jlithen is offline jlithen  Finland
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Also the Logitech harmony ones seem to work.

I bought the Proceed for less than 100 bucks, so it is my burden now.
I do not use it at them moment since I need abut 1-2dB of balance adjustment in my listening room

I replaced all caps on the PSU board that seemed bad.
I tried to measure most voltages, but not sure if I managed to measure all.

Anyone any idea?

Now there is one for sale on ebay Germany with the same issue.
What are we all missing?
At first I thought that I do not know how to use it, but if others have the same issue, maybe it actually is a "problem".
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Old 2nd June 2014, 07:11 AM   #10
jlithen is offline jlithen  Finland
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Sorry I did not read well enough. Did wayle45 get it working?
Mine is not blowing fuses, but I will still double check all rectifiers.
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