Yves Marchon Posted October 18, 2021 Share Posted October 18, 2021 I just bought an ACL 1.5 with MIVAR motor and looks like some electronic components on the motor circuit has fried. I am looking for circuit diagrams of the MIVAR motor. Anyone can help? Thank you very much Quote Link to comment Share on other sites More sharing options...
Heikki Repo Posted October 18, 2021 Share Posted October 18, 2021 You could ask AZ Spectrum - they repair those motors. A while ago I stumbled on a Russian website with reverse engineered circuit drawing of the motor electronics, but unfortunately I can't find the site now. I should have it saved on my computer somewhere... Quote Link to comment Share on other sites More sharing options...
Yves Marchon Posted October 19, 2021 Author Share Posted October 19, 2021 16 hours ago, Heikki Repo said: You could ask AZ Spectrum - they repair those motors. A while ago I stumbled on a Russian website with reverse engineered circuit drawing of the motor electronics, but unfortunately I can't find the site now. I should have it saved on my computer somewhere... Thank you for pointing directions, I will drop an e-mail to AZ Spectrum about it. If by chance you get your hand on those drawings, that would be amazing. My motor is actually working at all speeds but the components marked red on the photo fried. I am trying to figure out what there are here for 😉 Quote Link to comment Share on other sites More sharing options...
Heikki Repo Posted October 19, 2021 Share Posted October 19, 2021 Found the saved pages and the link! https://pouch4.wixsite.com/index/eclair Perhaps you could contact the person and ask for those circuit drawings and if we could put them online somewhere... Quote Link to comment Share on other sites More sharing options...
aapo lettinen Posted October 19, 2021 Share Posted October 19, 2021 4 hours ago, Yves Marchon said: Thank you for pointing directions, I will drop an e-mail to AZ Spectrum about it. If by chance you get your hand on those drawings, that would be amazing. My motor is actually working at all speeds but the components marked red on the photo fried. I am trying to figure out what there are here for 😉 it's a blown up capacitor, a broken zener diode and a fried transistor but nothing else broken? you should be able to get replacements relatively easily if getting the capacitor and diode exact values and a close enough replacement for the bc183 npn transistor if the original ones cannot be found anymore Quote Link to comment Share on other sites More sharing options...
aapo lettinen Posted October 19, 2021 Share Posted October 19, 2021 those bc183's are still sold, at least on ebay. replacement diode and cap should be easy to find when having the values nailed down Quote Link to comment Share on other sites More sharing options...
Yves Marchon Posted October 19, 2021 Author Share Posted October 19, 2021 3 hours ago, Heikki Repo said: Found the saved pages and the link! https://pouch4.wixsite.com/index/eclair Perhaps you could contact the person and ask for those circuit drawings and if we could put them online somewhere... Oh, this is great news! Thank you so much for digging this out. 1 Quote Link to comment Share on other sites More sharing options...
Yves Marchon Posted October 19, 2021 Author Share Posted October 19, 2021 1 hour ago, aapo lettinen said: it's a blown up capacitor, a broken zener diode and a fried transistor but nothing else broken? you should be able to get replacements relatively easily if getting the capacitor and diode exact values and a close enough replacement for the bc183 npn transistor if the original ones cannot be found anymore Thank you for the details. Nothing else seams to be broken. The motor seems works at all speed. I have very basic knowledge of electronics but it has been 20 years I have not touched a circuit board... I will hunt for those components online and proceed to repair. PS: I am still interested in your Crystal motor project for the Konvas 😉 Quote Link to comment Share on other sites More sharing options...
Yves Marchon Posted October 20, 2021 Author Share Posted October 20, 2021 On 10/19/2021 at 10:44 AM, Heikki Repo said: Found the saved pages and the link! https://pouch4.wixsite.com/index/eclair Perhaps you could contact the person and ask for those circuit drawings and if we could put them online somewhere... Heikki, I asked him but he does not want to give up his work for free on the internet which is understandable. He was very kind and provided me with just the information and part of the drawing I needed. Again thank you so much for your help! Quote Link to comment Share on other sites More sharing options...
Heikki Repo Posted October 20, 2021 Share Posted October 20, 2021 32 minutes ago, Yves Marchon said: Heikki, I asked him but he does not want to give up his work for free on the internet which is understandable. He was very kind and provided me with just the information and part of the drawing I needed. Again thank you so much for your help! Very understandable! I wonder, would he be open to having his contact details on some of the ACL websites? I'm sure that in the future we are going to need people like him. Having someone on the European side of the Atlantic with knowledge on the ACL motor would be a big asset moving forward. Quote Link to comment Share on other sites More sharing options...
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