I tried to repair this great Agilent 33220A Function / Arbitrary Waveform Generator
See here:
https://www.eevblog.com/forum/repair/agilent-33220a-generator-repair-help-request/Error message: "
Reference phase-lock loop is UNLOCKED"
Error code:
606It seems the U501 (FPGA) is bad and needs to be replaced.
I do not have the tools nor have I ever replaced an FPGA and there are probably plenty of people here, who can do this.
And may be it is NOT the FPGA, as was suggested.
The condition from the outside is "like new", no damage no scratches It seems it was calibrated in 2014
No paperwork but user manual and service manuals are easily downloaded.
Offered here at Euro 200
Shipping within Germany = FREE
Shipping within EU = Euro 22
Sold AS-IS, needs repair.
Turns ON, and shows display and frequencies can be selected and changed.
The instrument reacts to the push of buttons but has NO output.
Here are a few pictures