Can you fix your photo links?

Those EPROMs (are they EPROMs?), sockets and switches lcould be a problem. The switches look like those terrible Isostat ones plaguing a lot of English consoles from the 70's and 80's.If you can reliably get those working, theres a lot of people who would hire you to fix theirs.

greg wrote:Can you fix your photo links?Thanks for letting me know that they weren't working. I could see them fine, but only because I was still logged into my google account. They should be fixed now.

greg wrote:Those EPROMs (are they EPROMs?), sockets and switches lcould be a problem. The switches look like those terrible Isostat ones plaguing a lot of English consoles from the 70's and 80's.If you can reliably get those working, theres a lot of people who would hire you to fix theirs.They're 4096 bit DRAM chips (MM5280).Now that I've gotten into it, there's no way I'm working on another one of these. There's a reason that David Kulka stopped working on them. The only shop I know of that's still fixing old 910s and 939s is Dane Beamish Electronics in Cleveland. If I get to a point where I want to throw in the towel, I'll probably just send it off to him.

Eventide H 910 Harmonizer:Picked this up from Marco Benevento on Reverb a few weeks ago, sold as non-functional.It did power up when I received it, but only for about 10 minutes before it blew the mains fuse.Somebody had bypassed all of the Molex headers by soldering directly to the pins, including the three dBx 303 cards. I replaced all of the tantalum capacitors, changing all the ones on the power supply rails to electrolytics to avoid the dreaded 'failed-short' condition that tantalums are known for. The ones in the signal path stayed tantalum.I've also replaced the headers and connectors and made new wiring harnesses.There was one bad DRAM chip on the digital board that was sagging the -6 V supply to -2.5 V. I've ordered a replacement. The thermal imaging camera also shows a few suspect logic chips that I've also ordered replacements for. There's also one AD7530 10-bit DAC that seems to be intermittently overheating.

Yeah, nothing like using a $16k camera to fix a $150 piece of gear.https://www.flir-direct.com/product/fli ... egree-lens

That some Predator-level shit right there.

Nate Dort wrote:60's Sunda Medallion amplifier:https://reverb.com/item/12265445-sunda- ... ot-workinghttp://jedistar.com/sunda/Never heard of these before, but for $30 shipped, why not? Probably flying blind, as there aren't any schematics out there to be found.EDIT: looks like Gary Sunda designed the RGs and Switchmasters, among others, for Randall.This thing arrived yesterday. First impression: it's tiny! I'm guessing it's probably closer to 30-50 W output also, just based on the fact that it only has two output transistors.Looks like it took a hit during shipping. The aux power socket and fuse holder is cracked and the rear panel is bent slightly. No big deal, I need to replace the power cable anyway. It's not even connected internally anymore. Also, a wire is disconnected from one of the output transistors.Somebody has been inside before and recapped it, probably within the last 10 years, judging by the look of the caps.Date codes inside seem to indicate '68-ish. Looks like few germanium transistors in the preamp.

Both are better than my finger.