HP 3314A and HP 8647A (part 1)

This is a teardown and explanation video of both units as I explore them. I will make a part 2 of each unit to do further testing sometime in the future at my bench. Special thanks to my friend Bert for providing me with these units.
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TIMESTAMPS
0:00 -Introduction
1:30 -Teardown Overview 8647A
7:12 -Main Controller Board 3314A
11:14 -Mode Board 3314A
15:28 -Optional Hardware 3314A
15:57 -Generator & Amplifier Boards
18:14 -Circuit Functions Overview
34:34 -Testing of HP 3314A

[@timcoates1925]

Excellent demystification. Looking forward to part 2!

[@Adam.Videos]

👍

[@TheDefpom]

@6:00 also replace the IEC input socket assembly, there are more capacitors inside there that explode too, I caught it on video once when a doing a repair. the smoke from that filter blowing up absolutely stinks, my lab smelt bad for 2 weeks !

[@t1d100]

Just for emphasis, for those that do not know... The cracked capacitor is a RIFA brand. These caps have a notorious reputation for being literal time bombs. They do much damage, when they go off. They are a replace-on-site component. They are found in all brands of high quality equipment, from this era. Interestingly, they are still produced. I understand that their epoxy coating has been reformulated and that cracking is no longer an issue. However, I still can't warm up to the idea of using them... I recommend that everyone do some research on them. You will quickly understand what all the clamor is about.

[@Adam.Videos]

@@t1d100 Yes, and thank you for the tip!

[@Adam.Videos]

Ok I will look into that as well and thank you for the tip!

[@CBtronica]

Awesome explanation. Thanks!

[@Adam.Videos]

👍

[@amirrashkan6216]

Way to go Adam...

[@h7qvi]

Would be interesting to see the sine shaper circuit

[@Adam.Videos]

It is actually an HP integrated custom chip, see picture at video time stamp 24:06

[@h7qvi]

Missed that bit from skipping

[@Zazubahellsdemon]

I have a similar HP with a cracked paper capacitor. Did you find a part and can you provide a link?

[@Adam.Videos]

So I am planning to use this equivalent part from Mouser: www.mouser.com/ProductDetail/871-B32682A6473J they were out of stock but seem to be available now

[@Zazubahellsdemon]

​@@Adam.Videos great! I'm looking forward to part 2. I got mine from my father's estate so I'm hoping this is all I need to get it up and running so I can sell it.

[@zdzisiek1979]

W tym HP słaby punkt to bateria systemowa. Mam 100kHz -1GHz

[@Adam.Videos]

True, I was lucky with the battery!

[@zdzisiek1979]

@@Adam.VideosW moim HP bateria ma 3.14V ale to słaby punkt generatora .