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SX-100 failure
Given an SX-100. It doesn't work.
Chassis and interior in good shape, no corrosion. Lights fire up when turned on. Attached Hallicrafters 3.2 ohm speaker (or headphones if plugged in) hums, and I hear scratchy noises when I change across the bands or switch to phono. S-meter moves across the dial when I spin the sensitivity knob. But, it doesn't actually receive anything, and the S-meter does not move as I traverse the bands nor does it change as I move within a band. Suggestions on priorities for troubleshooting, by tube replacement or otherwise, appreciated. I feel the detector is the place to start? Have a multimeter, is all. In Portland (OR) Metro area. 0A2 voltage rectifier $6 5Y3GT rectifier $10 6AU6 1st mixer & crystal cal (1 ea) $10 6BA6 1650 KHz IF amp, 2nd mixer, 50.5KHz IF amp (1 ea) $8 6BJ7 detector/AVC/noise limiter $5 6C4 1st conversion oscillator & KHz IF amp (1 ea) $13 6CB6 RF amp $5 6K6GT audio output $8 6SC7 audio amp/BFO $9 12AT7 2nd conversion oscillator $13 Your Elmering would be appreciated. Thank you in advance. |
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