Cinematronics Condor power supply

HI25

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Hello, rebuilt a condor power supply for my Ripoff, get back all tension + 25 & -25 DC 6.3 VAC but i the regulator LM723CN no change still 5v VAC on pin H3-13

I check voltage on the Molex display H3.
Already change C1 & C8 too .
any ideas ?
I can change the TIP 29 but I don't find it on the schematic of the power supply so I don't know if it could be useful.

Thanks
 
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How are you measuring the AC? I ask because I had a similar problem driving me crazy until I found out the cheap Chinese made DMM I was using would show AC voltage when there was just DC present. I finally had to measure with an oscope to figure out what was going on.
 
Here is the shematics of the condor power supply.

Is something to convert the power for the 5V or is it simply T1 the problem ?
 

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Check across C7, that is the bulk input cap for the 5V. If there's AC there (ripple) then it will be in the output as well. If there's no AC there then it's likely something in the circuit is oscillating and I would break out the scope to track it down. What DC level do you read at the output? Zero? Is the AC riding on a DC level or not?
 
hello,

I have 44 mv DC on my multimeter PIn H3-13 H3-15 for the ground and 0 v AC.

I have -277 mv DC pin H3-13 H3-12 for the ground and more than 6.5V AC but not stable.
 
I can't seem to find H3 on the schematic you posted. On that schematic ground is J1 pins 4,11,12 and +5V is J1 pins 9,10. Are you looking at a different schematic than the one you posted?
 
As mentionned before i take the mesure on the display molex H3 directly connected to the power supply named H3 on this schematics
 

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before C7 I have -35v DC and 5 V AC if I plug the multimeter on H3-15
When I plug my multimeter only on H3-15 I have 5V AC with one probe only (nothing plug for the other).
I changed C2 C3 C4 C6 & C7 nothing better.
 
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