seti Posted July 18, 2020 Share Posted July 18, 2020 I'm still learning how to use the Sound Technology Gear but it is all restored. Can't even count how many caps we replaced. I've fallen into a hole of test gear restoration not just tube amps. If you can't measure what you've built how do you know what you got?? Here is my first tech work bench... Everything works. 4 Quote Link to comment Share on other sites More sharing options...
deafbykhorns Posted July 27, 2020 Share Posted July 27, 2020 Complete with distortion analyzers 4 Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 27, 2020 Share Posted July 27, 2020 On 7/18/2020 at 4:03 PM, seti said: I'm still learning how to use the Sound Technology Gear but it is all restored. I see several variacs ------- 1 Quote Link to comment Share on other sites More sharing options...
seti Posted July 28, 2020 Author Share Posted July 28, 2020 23 hours ago, deafbykhorns said: Complete with distortion analyzers That is a luxury work area... WOW!!!!! Who made the GM70 amps????? Nice and clean!!! Quote Link to comment Share on other sites More sharing options...
Seadog Posted August 9, 2020 Share Posted August 9, 2020 Not an electronics workbench and pretty cluttered today, but that's the way it is when working on a project. 4 Quote Link to comment Share on other sites More sharing options...
rigma Posted August 9, 2020 Share Posted August 9, 2020 4 Quote Link to comment Share on other sites More sharing options...
seti Posted August 9, 2020 Author Share Posted August 9, 2020 3 hours ago, rigma said: That is superb but I would not have expected less. Is that one of the MC30's I sold ya? Loved those but at the time plumbing was even more important lol... Just so you know it is your fault I'm building now. In Hope we heard your 300B amps and you said I could build and just needed to start small... I am planning a 300b / 50 triode amplifier. What is the device with the green face? Thanks!! Quote Link to comment Share on other sites More sharing options...
rigma Posted August 9, 2020 Share Posted August 9, 2020 That MC30 was not one of them but I had already gone through them about a year ago. The green thing is a vintage AC&DC power supply with 3 Variac's, ma. amp, mv & AC/DC volt meters. I bought it from a old TV shop they went out of business for $50. I asked about it's history & he said it was built as a school project in the 1960's, back when they used to teach practical things. Oh it did have one broke DC meter which took me a year to find a replacement, but all is working now. 3 Quote Link to comment Share on other sites More sharing options...
rigma Posted August 9, 2020 Share Posted August 9, 2020 The unit with the 5 Multi Meters was my build. It has a 10 amp isolation trans supplying the top outlet with the variac. The 5 meters are because I am scared of high voltage! ⚠️ It is designed so I can connect to 5 voltage points under test with power off, switch on and see results without getting hands near danger while probing around. It is designed to where it only needs 1 ground connection, (to help prevent a rats nest) to DUT or more if needed, switch selective. Mike Beasley helped me simplify this concept. 5 Quote Link to comment Share on other sites More sharing options...
Coytee Posted August 9, 2020 Share Posted August 9, 2020 Reminds me a bit of Lilly Tomlin's switchboard on Laugh-Inn! 1 Quote Link to comment Share on other sites More sharing options...
rplace Posted August 9, 2020 Share Posted August 9, 2020 1 hour ago, Coytee said: Reminds me a bit of Lilly Tomlin's switchboard on Laugh-Inn! One ringy-dingy Quote Link to comment Share on other sites More sharing options...
OO1 Posted August 9, 2020 Share Posted August 9, 2020 2 hours ago, rigma said: That MC30 was not one of them but I had already gone through them about a year ago. The green thing is a vintage AC&DC power supply with 3 Variac's, ma. amp, mv & AC/DC volt meters. I bought it from a old TV shop they went out of business for $50. I asked about it's history & he said it was built as a school project in the 1960's, back when they used to teach practical things. Oh it did have one broke DC meter which took me a year to find a replacement, but all is working now. e amazing unit ---------------------50$ is less than the value of 1 of the smaller variacs Quote Link to comment Share on other sites More sharing options...
seti Posted August 10, 2020 Author Share Posted August 10, 2020 10 hours ago, rigma said: The unit with the 5 Multi Meters was my build. It has a 10 amp isolation trans supplying the top outlet with the variac. The 5 meters are because I am scared of high voltage! ⚠️ It is designed so I can connect to 5 voltage points under test with power off, switch on and see results without getting hands near danger while probing around. It is designed to where it only needs 1 ground connection, (to help prevent a rats nest) to DUT or more if needed, switch selective. Mike Beasley helped me simplify this concept. Fear of the electric blue jesus is what kept me from DIY. I kept reading the safety articles until I had it down and also met an experienced local tech.. This is brilliant... Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted August 12, 2020 Share Posted August 12, 2020 I don't see any hammers. How can you guys fix anything without a hammer? 2 Quote Link to comment Share on other sites More sharing options...
Ceptorman Posted August 12, 2020 Share Posted August 12, 2020 22 minutes ago, CECAA850 said: I don't see any hammers. How can you guys fix anything without a hammer? Or duct tape....that stuff fixes anything. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted August 12, 2020 Share Posted August 12, 2020 25 minutes ago, Ceptorman said: Or duct tape....that stuff fixes anything. Duct tape and WD-40. If it moves and it isn't supposed to, use duct tape. If it doesn't move but is supposed to, use WD-40. 1 Quote Link to comment Share on other sites More sharing options...
Coytee Posted August 12, 2020 Share Posted August 12, 2020 I've always felt that WD & Duct tape were very misguided..... It's Vice Grips or nothing baby!! Quote Link to comment Share on other sites More sharing options...
seti Posted August 13, 2020 Author Share Posted August 13, 2020 On 8/9/2020 at 1:56 PM, rigma said: The unit with the 5 Multi Meters was my build. It has a 10 amp isolation trans supplying the top outlet with the variac. The 5 meters are because I am scared of high voltage! ⚠️ It is designed so I can connect to 5 voltage points under test with power off, switch on and see results without getting hands near danger while probing around. It is designed to where it only needs 1 ground connection, (to help prevent a rats nest) to DUT or more if needed, switch selective. Mike Beasley helped me simplify this concept. Hey Rigma you got a schematic for this thing ? I like the concept.. Could keep me from seeing electric blue jesus. Quote Link to comment Share on other sites More sharing options...
Davecv41 Posted August 14, 2020 Share Posted August 14, 2020 On 8/9/2020 at 4:00 PM, RandyH000 said: amazing unit ---------------------50$ is less than the value of 1 of the smaller variacs I've gotten a couple variacs at swap meets. One was in a homemade power supply. People don't know what they are, or what they cost new. Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted August 26, 2020 Moderators Share Posted August 26, 2020 Where is yours @Wardsweb ? Quote Link to comment Share on other sites More sharing options...
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