Thought about bidding on this lot, but have worked out the K05-5340A is a replica*, so someone might have a pile of blank PCBs, which would be cheaper to send.
https://www.ebay.co.uk/itm/284662057463
*See if you can spot the assembly/design? error.
David
Other than the solder job that leaves me baffled with most joints not having any solder at all, or only half what they need, you mean ?!
Other than that then, it looks like he used a 110R resistor instead of 240R ? Or if the colours are a bit off and what I see as brown is rather, some shade of dark red... then that would make it 220R instead... but that's still not 240R...
I didn't even look at the resistor colors, but I agree they do look wrong on the 240Ω.
Electrolytics are in series + to - rather than in opposition + to + as they are in the schematic?
-Pat
That's exactly what I noticed.
Everything points to a replica, shame as they took time to add the
hp logo, but didn't managed to follow the diagram included in the listing pictures, I did check both my paper manual & the Agilent pdf and they were the same.
I made a version of this along with the riser card, I might have one spare set left, maaaaybeeeee.
Do you need it if I can find it?
[EDIT] Found them. I also have a replica unpopulated PSU board for the OCXO option too if you want me to throw that in too.
I'm still working on the faulty one from the PP auction, I don't think I'll need it immediately, but will do at some point in the future.
I've now got three of these counters, one working, the part working one (with defective TF) and now an early one (missing both VCO cards).
The third is the only one that has the oven option (clue is the
* symbol next to the display), it's a bit unusual as the S/N is below 00100, also the name on the tags, is the same name as the project manager in the April 1973 journal, I probably can't prove it's genuine though, but it's an interesting piece of the history.
https://www.ebay.com/itm/HP-5340A-Frequency-Counter-/165300594867?_trksid=p2349526.m4383.l44720.c10&nordt=true&rt=nc&orig_cvip=trueDavid