HP 98035 Clock Module Repair-A-Thon - Part 1: 12 bad boards, how many can we save?
HP 98035 Clock Module Repair-A-Thon - Part 4: getting the ghosts out of the interface boards
HP 98035 Clock Module Repair-A-Thon - Part 5: 100% success or bust!
HP 98035 Clock Module Repair-A-Thon - Part 2: HP's Nanoprocessor
HP 98035 Clock Module Repair-A-Thon - Part 3: magic smoke escapes
LED watch chip from Texas Instruments (HP 98035 Repair-a-thon Part 0)
HP 9825 calculator with HP 98035 clock module demo (and an Apollo switch!)
Inside failed vintage components: 1 MHz quartz crystal and early CMOS IC
HP 9835A
HP 9825 Repair Part 5: We have an Apollo 13 disaster on our hands
Bubble LED clock hack with 1970's tech
HP 9825T Repair Part 1: Power Supply Meltdown
Dial-A-Level lives again
Expensive Scrapyard Finds! Repair-A-Thon!
Xiaomi high voltage refrigerator lemon
HP 8082A Pulse Generator Repair Part 1: Fast Pulse Synthesis, the Analog Way
Apollo Era Switch Gear from Master Specialties
HP 9825 Repair Part 4: The processor reads and executes ROM code!
HP 85 Repair Part 5. Comparison of my two machines, hidden signatures.
New Collection Arrivals