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Recap all.

8924C PSU Took the PS out of the chassis and it looks like the 47uf cap was already replaced in my PSU unit, the green light is on, but when the power button is pressed, the supply makes a clicking

Gents, A quick update. I am in the process of building a DB9 male to female ribbon cable and trying to find my riser cards that I bought a few years ago in order to be able to do the measurements

Hi guys !! Suddenly I have this problem on the test set, what could it be? I'm not going to spend a lot of money on it, can it be used with sufficient accuracy, or is it very seriously ill? Greetings

Im thinking ebay would be best. We buy them for $500. You should do much better on ebay.

Good morning from Pinellas County, Fl. Just was wondering where would be the best place to sell my HP8924C (working condition). Power supply caps are good to go and the unit is fully functioning.

[Moderator note:? Rick's email was sent around noontime (US EDT) Wed.; actual posting is therefore two days later and out of order] I would first check the rf level coming out of the input module

Chris, You're welcome. Thank you so much for telling your success story.? By doing that you gave back to the group as a whole and to the specific members who were involved in that thread.? Rick made

Hi! I am new to this site. Joined because my 8935 just wouldn't power up one day. I did not have it plugged in or turned on for several months, and when I went to use it, it was dead. Would not turn

The receiver for the earlier 8920A units is a bit different but will still work in the 8920B. It may give errors because you can't transfer the cal data too. What you need to do is just swap the

If you look at the RF I/O you should see an MMIC or two used for the higher ranges. Those may be weak in both units. You could look at the RF I/O output? using single step on the RX diag section and

I read page 645 in the Assembly Level documentation which describes the Receiver Assembly test: I should be able to measure the 114.3 and 614.3 MHz-signal levels on various places on these modules to

Ok so before I swapped the three units RX, RX Synt and SA from (what I thought was) my working unit I run the complete RF_Diags and I was surprised that I now got ONE failure on the test and it was

Aaaah! I did not realize that there is a DB-9 connector on the bottom of the SA module between the P1 and P3 connectors! I see that now when I look at the schematics and the picture showing the

U15 in the SA LO was what I was referring to.? This is the LO that is actually swept for the SA function. The SA can be easily extend using a 9 pin D extender and I also use the SA terminator ( used

Thanks for valuable comments John ? I will try to verify the Power Supply levels as well as inspect the caps on it first to make sure the caps in the PSU are not bad/getting bad. Thast is how I

you may have multiple issues. The SA card looks very suspect since it fails the diagnostic section for the SA ...looks like it has a major failure in the signal path. internally ...probably

Hi Rick Yes I have run the full RF_diags suite and it reports in total 6 failures, 5 of them in the receiver assembly test and one in the spectrum analyzer test. SA module has one fail (I have option

Did you run all the RF_diags? Is that the only failure? If the input module was overpowered at the antenna port, you would get that failure.

Ooh!, what a gem. Thanks Colin G4CWH Sent: 08 February 2024 13:40 To: [email protected] Subject: Re: [HP8920/8935 Family] HP produced videos Mike, I believe that is the same