Great channel and I really enjoy watching your videos. Here is my Polymoog story if anyone is interested.

Polymoog the organ back in the day that came back to the factory as fast it went out!

I have my fathers beloved polymoog keyboard in my basement awaiting restoration. Your video showed some of the same issues as my polymoog. The 200+ page service made the task look daunting but with a systematic approach ,as you’ve taken , it seems almost possible 😊

Boy, this sure brings me back! A 203A (one of these) was the first synthesizer I ever bought, in I think 1985 or 1986. I was able to purchase a service manual and I caught my unit up on all the engineering changes that had been made. Over the years I had it, I repaired a failure in the power supply, a couple of dead LEDs, and at least one 4xxx chip. The keyboard contacts often needed cleaning and the one-per-key voice cards often failed to make good contact with their connectors - oftentimes a solid whack to the Polymoog's underside was sufficient to clear a dodgy key up temporarily. A 203A that works can be kind of dinky (especially the presets but the string preset is great) but it can also be a fearsome instrument if you start combining the VCF and parametric filter section output - even more so if you utilze the sections' separate outputs on the back panel and pan them differently. There's nothing else that can come close to that. One note on the video that I wanted to make is about what's being referred to as "shaping" to produce the sawtooth generation. What's actually going on is that a square wave is being

I had the opurtunity to buy either a New PolyMoog or New Chroma. I'm glad I chose the Rhodes! (I'm also glad I sold it 10 years ago.)

Never realized that the Polymoogs were so problematic! Thank you so much, SynthChaser!

Sometimes, "they don't make them like they used to", and in this case I'm glad! That being said a machine that pushes ahead of it's time, and as such had some quirks and issues, is definitely still quite endearing. Great work on this Polymoog.

I bought 2 from a guy in Oklahoma with about 30% functionality in 1991. Dirt cheap, as was most analog at the time. They both went downhill and the "fix it shop" in Mission Valley took them in and shortly after seeing a bench told me to take them back Not fixed/ no charge. I got one of them to play reasonably well for 8 more years before smoke emanated from the back and it screeched a terrible death to silence. Most of the components were actually good but just the typical shorts here and there which kept it from playing through a song reliably. Sold the parts of both to a store which specialized in used instruments. They gave me about half what I paid the other guy as store credit. Both businesses are now closed down. I currently have what I like to call my junior PS3300 (Korg Lambda). It works well enough. It's neither a Polymoog nor a PS3300 but still an example of that era.

I appreciate your content and sharing your knowledge. Keep up the great work!

Very informative insight into the polymoog, thank you.

Thank you so much! Love your videos.

Very informative video!! You have an amazing talent and thank you for sharing.....

super video, nice job

Thank you very much for the education and information. Absolutely interesting and informative, didn't know these electronic keyboard's was so technical.

I love Videos like this...Thanks for doing it :)

I see you're using Vishay axial caps, which is validating for me since I don't really know who to use in place of Nichicon for axial caps these days since they stopped making them and decided to settle on Vishay to see how it goes. I'm like, fundamentally opposed to using IC caps given how unreliable their stuff was throughout the 2000s-2010s. So for a consummate, highly skilled repair guy like you to be using Vishays counts as a sort of seal of approval in my book.

That's a beautiful beast!

Really interesting video, I don’t have a poly moog , but I use to own a moog opus 3 , there is something about those old moogs, they sounds so big and warm

Very interesting indeed!

Even when it's sick, it still has that unmistakable polymoog sound...!