KenMood
piece of work
Hello,
Recently I acquired a KR-9600 which I was planning to restore.
After determining the overall condition of the receiver and the TA-200W modules (both turned out fine with help of the info found on this forum)
EW has helped me here pointing me in the right direction with an input problem, which turned out to be a transistor I installed backwards on one of the amp boards. (in the Netherlands we call that 'onnozel'.... fill in the blanks here)
Attached are some before pics. This unit was pretty invested with that good ol'brown dust blanket. It looked like a whole new ecosystem. I cleaned it out roughly and removed the main filter caps as the old ones were leaking badly, they were actually dripping and it was sticky all over the place, even traceable all the way back to the car.
I ordered parts from Digikey and started my way through the unit using all the info I could find here.
Work I am planning to do:
- thorough cleaning
- deoxit / clean all controls, connections and switches
- all new fuses
- rebuild the amp boards with all new components, getting DC offset to an acceptable value
- clean the heat sinks and use new compound
- recap the boards, check all solder joints
- Tuner opamp mod
- preventive actions to power supply / add 25W resistor
- new bulbs
- triple check all the work
- Power switch mod (@230V AC) - thanks Hopjohn
- ?
I will post the progress made in the days ahead.
Recently I acquired a KR-9600 which I was planning to restore.
After determining the overall condition of the receiver and the TA-200W modules (both turned out fine with help of the info found on this forum)
EW has helped me here pointing me in the right direction with an input problem, which turned out to be a transistor I installed backwards on one of the amp boards. (in the Netherlands we call that 'onnozel'.... fill in the blanks here)
Attached are some before pics. This unit was pretty invested with that good ol'brown dust blanket. It looked like a whole new ecosystem. I cleaned it out roughly and removed the main filter caps as the old ones were leaking badly, they were actually dripping and it was sticky all over the place, even traceable all the way back to the car.
I ordered parts from Digikey and started my way through the unit using all the info I could find here.
Work I am planning to do:
- thorough cleaning
- deoxit / clean all controls, connections and switches
- all new fuses
- rebuild the amp boards with all new components, getting DC offset to an acceptable value
- clean the heat sinks and use new compound
- recap the boards, check all solder joints
- Tuner opamp mod
- preventive actions to power supply / add 25W resistor
- new bulbs
- triple check all the work
- Power switch mod (@230V AC) - thanks Hopjohn
- ?
I will post the progress made in the days ahead.
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