OP was talking about 694 , 684 and going for higher BW, so if you cannot understand it, then you are not quite there yet, yeah!
There are many connectors, open it up and make sure all the connectors in particular the 2 vertical boards types are connected properly fully seated.
I would have a look at all the soldered joints and connectors joints for intermittent problems like this.
But the time keeper chip is also aging, I think already passed its time, could be a suspect. Swop one in if all else failed.
LOL @ "Realm to the noisy world. Hello, Noisy World!"
I'm about to take the scope apart and inspect the boards but prior to that, I'm going to go with Jay's recommendation to see if it is , in fact, the HD causing the hangboot (new word
) issue. I finally had some good rest so I'm rarin' to go today (I'm a bit of an extremist when it comes to working with electronics and learning so 36-48 hour stints are the norm
).
I also have some questions for you guys concerning this scope:
1. Is the memory upgradeable using the same process as used on the 7 series? Nevermind. I just found out that this model didn't have an option for more memory. That rained on my parade. Looks like I will be looking for a 784D or 794D.
2. Can I upgrade the HD to something larger (by conventional means) than it's current size? I think it's 2GB. Free space says 1.9GB? I'm contemplating on a SSD... yes I'm serious lol
3. How effective will the 520 schematic be as a reference for this C model?
4. Where to order the Dallas NVRAM Devices? I don't want something that's gonna die on me in 9 months like it did with TiN in his 7404 rebuild.
5. And lastly, does anyone have a working link to the Tektronix console build? I was looking yesterday but all the links were dead
Ok, time to get after it! I will report back in a few...
*Is this ok to keep here since this repair will inevitably turn into a Frankenstein build thread, or should I make a new thread in "Projects" once this repair is done? Thanks again guys!