My Seduction is not feeling well. The left channel is distorted and the right is out. I bought the unit from Doc when he was closing out the in-house use Seductions. So, I don't have the "I built it experience" to help me out on this one. It has the CS4 upgrade. I have the Seduction manual, but not the CS4 manual, so some of the terminal designations do not match up. The resistance checks seem to be fine.
The tubes are fine, both tested and then replaced with new 6922's. (I had Amperex 7308's in originally, but put in new EH 6922's till issue is resolved. I don't want to risk the 7308's)
The outboard pair of Led's on the CS4 do not light. All of the other Led's are lit.
The voltage check issues are:
27/37 70vdc 56/130vdc
29/39 70vdc 56/130vdc
39/40 70vdc 56/130vdc
A1/B1 135vdc 66/90vdc
A6/B6 70vdc 56/130vdc
The voltage at the 2 75K 1watt resistors is 128V inboard leg
I can't read the resistance value in circuit , I get out of limit, but the outboard LED's light when the DVM leads are on both legs of the outboard resistor.
All of the 1/8 watt resistors are 130 +/- 1vdc
All of the outer legs of the CCS transistors read 129 +/- 1vdc
The center legs are 1) closest to 1 watt resistors 56.5vdc
2) 65.6vdc
3) 130vdc
4) 90.2vdc
So any thoughts on what has happened and how I would fix it? Let me know if other tests need to be done.
TIA,
Cheers,
Geary
« Last Edit: February 07, 2013, 06:00:40 AM by galyons »
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