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The gear of this era had pins 2 and 3 opposite of today's convention. In this device, pin 2 is brought to earth; where as today pin 3 would be earthed. This caused me much confusion before I sorted it out when integrating my Amped 350 into my studio.

For a long time I was trying to fix some Technics sx-pr603, 703, 903 and 1000 with that no sound issue so, your video is like a light at the end of a tunnel to me. Also I had the same issue with some Yamaha digital piano. Now I have to remove the dust from those keyboards and start looking for that signal voltage. If I get some success of course I will post over here to save those keyboards from the landfill.

Hi Tom, I need your assistance. I have Kawai CN3, which does not give any sound to the speakers. I have checked the component on sound amplifier. I have also bought Peak Atlas ESR 70 to check the capacitors. Everything looks good. This is my personal piano. When I check the voltage on the both side of the speakers I get the 14 volt from both positive and negative side of the speakers.

This guy has a degree in waffling 😂

So what did you install Tom? 680ohm?

My very first video is me breaking the 100M dash record in summer games, with an Arduino and joystick cable to do the uhmmm uhmm wanking?! In that game.

Aaah this is the hardware hack ❤ keep those videos coming Tom!

Oh you can also read resistor values btw. So when you put in a thermistor on pins 9 and 8 you can show the progression of a temperature. Or put in a light sensitive resistor and you can then measure the lights and when it drops below a certain level turn on your lights with the user port and a relay. Something I did for my high school project. Very expensive way to turn on the lights automatically 😂 We also build a dtmf decoder that was done by my friend so when we dialed a phone and it auto answered we could press the keys on the phone which caused a serial char to be send from 0-F. Which allowed us to switch any number of pins in the user port. Him and I made a great team and he really got me to into phone hacking and electronics, and I pulled him into computer cracking and programming. Unfortunately he dropped out of college when we studied EE together after highschool. I wonder how he’s doing…

Yeah I couldn’t sleep, still having some residual heart tremors after surgery, that woke me up. So I first answered your question and low and behold what popped up as a recommended video 😂 This is so cool! So basically you can just turn that peek into a LDA and do my last video in the assembly series, which is joystick control 😂just haven’t found the lust to write and record it yet. Been too busy with Godot and GameCubes. But this is clever, playing on keyboard or controller is far more convenient for sure.

Hi there any video sound of it?

Awesome vid & excellent diligence with the board! Thank you, brother.

Hello Tom and greetings from the US. Thanks for the video and sharing your solution. I have a similar Technics piano (PX-55) and am experiencing the same problem. I have verified, as you found, that the keyboard generates a fine Midi signal (connected to my iPad w/GarageBand I can play the virtual instruments). I'd like to attempt your solution. I can solder, but I'm not very good at it. Any tips on what kind of wire and how to identify the exact points where I would need to solder the jumper? I'm presuming that both boards were fully removed when you did the repair. Regardless, I'll let you know how it goes one way or the other. Thanks for doing the hard work!

Hello from Canada, I believe my synth is “locked” into midi mode as well, and though my synth is a Korg MS2000R, since I’ve tried just about everything I could think of, this might be my last shot at this. So, could you tell me what that chip is [markings, identification] that you are pointing to at 5:30, and also the markings of that transistor, which switches the amplifier on and off. Yeah, it’s a long shot… not even the same brand of synth and all but hey, who knows? Please reply, any insight appreciated. Thank you kindly

Hello greetings from Mexico, im currently working on a Technics sx 450, with the same situation, due to limited time, i can only invest like an hour or two on the weekends, im going to follow your advice and i will certainly let you know the results.

WEll Done Tom i currently have 4- Technics SX-PR702 that seem to have similar problem and have been investigating on and off for a couple of years so any help is always useful and gratefully accepted Where are you Located please as I live in Spalding and would gladly Pay you to come and have a look at my instruments where you would be most welcome Massive help so far I do have Schematics and Circuitry for these. Best Regards Roy Blake

💘 p̴r̴o̴m̴o̴s̴m̴

Thanks

fantastic levels of knowledge. Making safe sounds good too

I've known tom for over a decade and he's fixed loads of my pedals and amps on numerous occasions, without being electrocuted once! He really knows his stuff and is great to deal with. He brings the dead back to life.

CROWD SAY BOOOO! SELEKTA! amazing work guys! can't wait to get them back and set up!

So cool to see! Nice one mate!

Is this what that thing looks like!...... Google images found it for me.

Valve amps murderous bastards they are... is what I was going to smart arse comment, then I bloody went and learnt a shit load about valve amps!...wow...interesting. bravo man

forgot to say, looooove the seagull sound effects. deadly editing man. love it

So those carbon pads control the velocity of each hit? woooow. My Micro korg gets some insane noises. great vid dude. always wondered what was under there

Really great! I now have a slightly better understanding of valves, thanks mate!

Very cool indeed!

Looking and sounding great Tom!

Hi, I've been to Bigbury and stayed at the "hotel"! Nice to see your vid on the beach, but can you stop messing about and give TH-camr's some more of your Heavy Rock stuff - like when you played "Trouble on Double Time" in Totnes, 2008?

Great video! Very well played!! The original had a raw earthy quality about it and you guys succeeded in getting the "same" earthy quality and atmosphere in what looks to be a great intimate venue! Hope you can do some more "heavy" material just like this.

FM Funkiness for Totnes, and a wicked quizmaster to :)

Awesome!

Nice work guys... great Koss vibrato on the solo too.. i actually think the tele cuts nicely.. a great homage to the original and great to see a young band keeping an old classic alive

sounds very classic rock.... well done guys!

Very good cover. This is one of the best free songs.

decent... only a shame the guitarist didn't at least get some inspiration from the original solo.. it's one of koss' most-polished solos imo.

paul koss would have been proud guys