Had a PV Delta Blues tonight. "No sound". Sure enough. FOund on both 10" speakers, the little thing on the frame that holds the terminals had popped free of its rivet and they dangle. Need to fix that. The speakers are mounted on threaded studs driven through the baffle from under the grille cloth on the front side. Naturally several of then just turned the thread stud and the nut won;t back off. get out my little 3/8 flat wrench and some heavy pliers on the narrowed end of the studs, and worked some of the nuts off. No access to a couple, so I had to remove the baffle to get at the rest. Pull the chassis and reverb bag to get the baffle out.
Got the speakers off, they test OK, ground off the old rivet and popped a new rivet into one. Too short, won;t cinch up. Grind off the new rivet, select a longer one and voila, nice and tight. Did the other. Brushed the 25 years of accumulated filth out of the amp cab. Mount the speakers, reversing the wrench process for the loose studs. Replace the baffle in the cab.
Chassis sure enough makes no sound. Fuses OK, has high voltage, no high voltage drop. NO lower voltages. Fuses OK.Measure at the 25vAC input, nothing there. Oh man, not a bad transformer... No, I could find it on the wires, but the IDC had failed. SO I snipped off the IDC and crimped on a couple KK156 pins and stuck them into an empty Molex housing I trimmed to two holes. Wires barely reach, oh well. close enough.
Maintenance, and clean as much dirt as my rag would remove from the panel. I must have two hours tied up in that baffle and speakers. AMp chassis works, no controls noisy. get me out of here, I thought I retired.
Some friends are bringing over an Oberheim OBxa that doesn't synthesize tomorrow. I am getting more work than when I was in business.
Maybe if I leave town...
Got the speakers off, they test OK, ground off the old rivet and popped a new rivet into one. Too short, won;t cinch up. Grind off the new rivet, select a longer one and voila, nice and tight. Did the other. Brushed the 25 years of accumulated filth out of the amp cab. Mount the speakers, reversing the wrench process for the loose studs. Replace the baffle in the cab.
Chassis sure enough makes no sound. Fuses OK, has high voltage, no high voltage drop. NO lower voltages. Fuses OK.Measure at the 25vAC input, nothing there. Oh man, not a bad transformer... No, I could find it on the wires, but the IDC had failed. SO I snipped off the IDC and crimped on a couple KK156 pins and stuck them into an empty Molex housing I trimmed to two holes. Wires barely reach, oh well. close enough.
Maintenance, and clean as much dirt as my rag would remove from the panel. I must have two hours tied up in that baffle and speakers. AMp chassis works, no controls noisy. get me out of here, I thought I retired.
Some friends are bringing over an Oberheim OBxa that doesn't synthesize tomorrow. I am getting more work than when I was in business.
Maybe if I leave town...
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