DJ9KW's HP repair chronicles

 

 

Repairing HP (and other gear) for years, I decided why not share some of my adventures on this page as gathering information is one of the hardest parts in repairing and maintaining this kind of stuff which is becoming more than 40 years old by now.

Enjoy reading along while I dive from one rabbit hole into the next :-)

Repairs
HP 856x / 859x related:

 

HP 5086-7744 LO distribution amplifier (LODA) replacement
HP 5086-7906 YIG oscillator bonanza
Others:

 

A TCXO replacement for the 10544A
HP 5342A power supply issues
HP 8660C output issues
A DIY HP diode detector power sensor substitute and a 11730A sensor cable
Development, Tinkering, Reverse Engineering
  MicroLambda MLMY-1071-1 Yig Tuned Oscillator
Oh no, just another YTO: Philips / Sivers Lab PM7020 2.1 - 8.3 GHz
Avantek ASF-8368M 2.0 - 4.1 GHz YTO
A standalone Dolby S En-/Decoder
Sony TC-D5M overhaul and repair
A reverse engineering deep dive into a Trixell Pixium 3543ez x-ray detector panel
Reverse Engineering the TCL Inverter Minisplit IDU-ODU S-Line Protocol
Software
  TomTerm - A data terminal program for embedded engineering