Hi Highvoltage,
Thanks for the advice. This person has two on ebay one is a HP-53131a and the other is a HP-53132 both apparently exhibit the Self Test failure and FR END error. I asked if he would drop down the price, he did but to me it is not enough to take a chance. Reading the HP literature all it says is a possible motherboard or power supply Except of the unit passes the Self Test but fails a specifically asked for FR END test the counter is likely ok. I suspect this person powered it up and just allowed it to do the self test and experienced the FR END failure during that test which could mean lots of troubles. I asked here as after reading this eevblog forum, you folks are always fixing some fault in a broken piece of the test gear to make it work again. Thought if anyone had seen this issue in the past it would likely be on here or the yahoo HP/Agilent group.
Neither unit have any accessories like a 3 GHz option or High Stability time base. I already have a Philips PM 6676 that does 1.5 GHz and seems to work nicely. I have it connected to a Trimble Thunderbolt running through a modified video distribution amp with 5 other pieces of test gear, soon to me 6 when I connect up the Siglent SDG1025 also. I always want something just a bit better it seems. I'll save up for a working HP-53131a if I still want one later, looks like a very nice piece of equipment..