Peter Chou Power Supply HELP

Smitty420

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I have two of these things. One minute they work fine next minute no 5V or any thing. I fiddle with them, I've changed out the resistors and checked the transformers, even tried sealing those out. Can't find any real information on the thing. I get like 1.1vdc non adjustable at the 5v variable output and no 10vdc on the regulated output.
 

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well I found a printout with a schematic finally. Not sure why I missed the schematic before, as the rest was information I've already seen. So the schematic says Im supposed to be getting 115vDC on the output of the bridge rectifier. IF that is the case then I have bad Bridge rectifier. I'm surprised as I thought I replaced this part on at least one of these power supplies. So I will try the bridge rectifier to see if I get the voltage Im looking for. I hope it is the problem as I've been stumped by these for some time.
 
fine if you're going to keep the game its going in but new power supplies are like 21 bucks
if you sell the game to someone with a used power supply and the thing fails a month after its in his gameroom, you are no better than a trashbag used car dealer in my eyes.
 
fine if you're going to keep the game its going in but new power supplies are like 21 bucks
if you sell the game to someone with a used power supply and the thing fails a month after its in his gameroom, you are no better than a trashbag used car dealer in my eyes.

yea but these are pretty good from what I know and they are wired for the game. Im more inclined that my stupidity is keeping me from repairing this power supply and a new power supply is a little more once I get it here. I count pennies and if I can figure out why this one isn't working then the puzzle is solved.

That being said after looking at the schematic I think I put the damn thing (bridge rectifier) in backwards at some point. So New Bridge Rectifier and make sure to follow the schematic.

If the part is what I think it is now and I can follow the schematic then total cost at this point is negligible as I have spent time and a couple of transistors, but cost of the rectifier $3.50.

I feel confident I found my goof.


I'll assume you are referring to someone else you know about the car salesman remark as you don't know me from Jim.
 
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If you put the rectifier in backwards it would have blown up and you would be now blowing fuses.

If you must fix that thing you should also change the caps. They may not "look" bad but if they are factory they are old and not doing their job correctly.
 
fine if you're going to keep the game its going in but new power supplies are like 21 bucks
if you sell the game to someone with a used power supply and the thing fails a month after its in his gameroom, you are no better than a trashbag used car dealer in my eyes.

If you know where to get the original Peter Chou power supplies for $21, please share. Most power supplies I have found in that price range have been no name knockoffs of Peter Chou supplies.
 
If you can repair it go for it though I would definitely replace the caps with high temps and use beefier resistors as well as a higher rated rectifier if it fits, it'll be better than new and outlast any new PS you can buy now.
 
If you put the rectifier in backwards it would have blown up and you would be now blowing fuses.

If you must fix that thing you should also change the caps. They may not "look" bad but if they are factory they are old and not doing their job correctly.

Yea After pulling it out and putting a meter on it I think it was in proper but maybe not giving me the right voltage.

I plan on reading Kens repair guides and go from there. Pretty sure Im due for a cap Kit.
 
I've had the +5 volt adjustment pot go bad (scratchy or intermittent). The factory mounted the pot with the lugs pointing up. I spray the pot out with volume control cleaner and then mount the pot with the lugs pointing down to keep out the dirt.
 
Those big box power supplies are horrible about if you're adjusting the power supply, it kills the voltage until you turn it off and back on again. Might just be the actual pot like Ken said.
 
I finally got my cap it in and bought a few caps with higher voltages than original and almost couldn't get them to fit. I did get all the new caps installed and put meters and testers on all the chips, diodes and transistors. They all "test" ok. So now I'm about to reassemble and I find the potentiometer had a little cable wth two wires and a ground and it looks like only the two wires are connected to the pot. So is the shield not connected? It looks like it might supposed to be but my other supply looks like it had shrink wrap around it and wasn't connected. And I can't really figure out this part f the schematic.

I need help.
 
as a rule the controls were single sided
ie no ground
that is used just as a case up ground (noise)


ed
 
just buy a new one

something else inside will just let go sooner than a new one and there goes your game board fried all to save how much money ?

no telling how many hours on that thing and look at the risk you take

more used car sellers installing used parts on a old car. have fun with your headache.

you guys are all over the place and trying to save how much money ?
 
just buy a new one

something else inside will just let go sooner than a new one and there goes your game board fried all to save how much money ?

no telling how many hours on that thing and look at the risk you take

more used car sellers installing used parts on a old car. have fun with your headache.

you guys are all over the place and trying to save how much money ?

So I guess by your reasoning I should just buy NEW games?
 
no, I'm saying just bite the bullet and install a new power supply for longevity

you asked for advice. now you're in the middle of a headache with a used power supply in the end

how much is the pcb worth you are trying to power up

any game new to me that I intend to sell, I install a new power supply every single time. I never get customer call backs due to a power supply problem and I have a nicer life because of it and so does the customer.

go ahead perform yet another experiment of a used PS
you cant say you weren't warned

good luck
 
no, I'm saying just bite the bullet and install a new power supply for longevity

you asked for advice. now you're in the middle of a headache with a used power supply in the end

how much is the pcb worth you are trying to power up

any game new to me that I intend to sell, I install a new power supply every single time. I never get customer call backs due to a power supply problem and I have a nicer life because of it and so does the customer.

go ahead perform yet another experiment of a used PS
you cant say you weren't warned

good luck


I asked for help repairing a powersuply. Your not helping.
 
I asked for help repairing a powersuply. Your not helping.

yes I did
you just don't like my answer

whats the value of the game board/pcb you are trying to power or are you ignoring my question for the second time
maybe too much 420 in your name

ok, don't take my advice
I will still try and help you no matter how much you _____

let us know what the fix was just for curiosity plz
 
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