Once again, I was donated a pair of Infinity Infinitesimal speakers by the same generous person, who donated the “System One” rack and three Nakamichi BlackBox series units from a previous post.
Infinity Infinitesimal Speakers
Power Designs TP330 Power Supply
I decided to take a gamble on purchasing a Power Designs Inc. TP330 triple output power supply. It was a bit rough looking with a bunch of stickers on the front panel, but no scrape marks from past sticker removal visible. The seller stated that the bottom analog meter was non-functional, but the output terminals measured voltage that changed with the voltage knob.
Nakamichi BlackBox Series Refresh
I was generously donated three Nakamichi BlackBox series units, by the same person who donated the “System One” rack from a previous post.
The units were in great condition, and more than likely could have been used as-is. They also surprisingly came with their original owners manuals, which usually get misplaced or lost over the years.
HP 3314A Function Generator Repair
I found a great deal on a Hewlett Packard 3314A 20 MHz function generator that was non-functional, but overall looked to be in good shape. It arrived in great condition and was well packed for a nice change. The seller clearly stated the issues with this unit such as errors when started up cold, which worsened over time until it finally lost the display and LED’s.
Nakamichi 610 Control Preamplifier Lamp Replacement
I did not take any pictures of the initial refurbishment of the Nakamichi 610 control preamplifier as it was mainly cleaning and capacitor replacement. But as soon as I thought the work on all the components of the System One rack had been completed, one of the dB meter lamps failed in the 610 preamp.
Nakamichi 600Ⅱ Stereo Cassette Deck Repair
Included in the rack of Nakamichi “System One” equipment I recently acquired was a 600Ⅱ two head cassette console. This is the same rack that was involved in a building fire and the previously repaired Nakamichi 620 amplifier.
Sharp Compet CS-2115 Calculator
Another nice calculator find for the collection is my CS-2115. It is a 12 digit calculator with a vacuum fluorescent display, memory, and several extra functions.
Hewlett Packard 5300B Measuring System
Repairing and clean-up of a Hewlett Packard (HP)5300B Measuring System with a 5305B 1,300 MHz Counter module.
This was supposed to be just a clean-up project, but this one turned into a bit more work that I had expected.
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