My First Service! Pioneer SX-650

[@Shuksanaudio]

Thanks so much for watching! If you are interested in sending your receiver/amp in for service, send me an email with the make, model, issues with it, what you would like done, and any other upgrades etc. My email address is located in the "about" section of the channel. I currently have a $300 service minimum as I don't have a ton of time to work on services at the moment but I want to do it more in the future! I'm still learning how to fix turntables, cassette decks, reel to reels, and other such source devices so I am not offering repairs on them currently. If you enjoyed this video, please like it and share it as it helps me immensely. Cheers 🍻

[@jimcabezola3051]

Wow! A reverse RIAA filter! What a brilliant idea I'd never heard of! You could test the Phono section without needing a phonograph and some LPs! Absolute aces! 👍 I rarely see folks actually sand back and clean the grounds in a piece of audio equipment; that made ME feel good not to mention quiet down any funky ground noise. Another really enjoyable restoration! Aloha!

[@Shuksanaudio]

@@jimcabezola3051 yes! It’s so useful. Definitely a worthwhile purchase. Allows you to send clean square waves through the phone stage and make sure they come out clean. Yes! Cleaning the ground connections is so simple and very worthwhile. Glad you liked the video! I appreciate you coming back and commenting on each one, Jim 🙏

[@mobitie]

@mattdealy I think U could or should charge a lot more. Proper real repairs like this should cost way more. Like $500+. Your saving real history and your skills are valuable. Hint... watch some @Mend It Mark too. Very skilled at fixing stuff to, and the restore part 😊

[@christopherduncan4033]

Bro!! Matt, you are a supreme throwback of customer service. Excellent and thorough job with display and explanations. Thank you.

[@Shuksanaudio]

Haha thank you! I'm glad you think so! I appreciate you watching.

[@BradCody-tl5cf]

Matt, you are off to a great start. I’ve been restoring vintage audio for over 10 years. You are very detailed in your work. The most enjoyable part of this job is to bring a failing piece back to life. Also, you’ll get to play with and briefly use really cool equipment. The only red flag with the sx-650 are the stk packs. I try to avoid any amps or receivers that have them because if they’re bad, replacement is near impossible.

[@Shuksanaudio]

Thanks so much! So cool that you've been doing it for so long! Haha yes! It's fun to tinker with a new piece of gear for a bit and not have to deal with storing it haha. Yess I did notice the STK packs and was surprised. I thought they didn't use them until the xx80 series. Thanks for watching and for your kind words ❤️

[@hitmanshivam3889]

Just found out your channel man and already love your enthusiasm for your work and I remember working on a old crt tv and Panasonic boombox/radio with my grandfather and the wiring and everything else reminded me a lot of those times and +1 sub and love from India 🙌

[@Shuksanaudio]

That's amazing! Thank you so much for sharing and for watching! Boombox repair with dad sounds like a good time :)

[@hitmanshivam3889]

@@Shuksanaudio grandfather/gandpa not sad but yes probably the best memories from childhood

[@Shuksanaudio]

My bad! Either way, it sounds like a good time. The older generation usually has so much to offer in regards to tinkering and building things.@@hitmanshivam3889

[@piotrfi8004]

Hello! Do you know why the "tuning" indicator on my Pioneer SX 650 receiver isn't working? I checked it with a multimeter, and it works fine, but it doesn't work when connected in the circuit. Could you tell me the capacitance and voltage of the film capacitors you used to replace the blue tantalum capacitors in the tuner, preamplifier, and power amplifier circuits? Why didn't you replace the two transistors that get very hot and don't have appropriately sized heat sinks?

[@Shuksanaudio]

Hello! I don't know why the tuning indicator isn't working. I would measure the voltage across the wires at the lamp. If there is none, follow the schematic back to where it should be coming from until you find power. Should be around 8v I believe but you can check the schematic. I use the exact same capacitance rating as what was on the tantalums. Your unit may be different so I would recommend checking your service manual or pulling the capacitors and reading the value off of them. Most of them were either 2uf or less as I recall. I used higher voltage film caps either 50v or 63v because it's what I had on hand and shouldn't affect performance. I assume you're referring to the two that I put new thermal paste on in the power amp/power supply? They tested fine and there was no sign of excess heat so I left them alone.

[@genehammond7239]

Nice job explaining the process Matt !!! 👍👍

[@Shuksanaudio]

Thanks Gene! Glad it came across understandable :)

[@bisarowood]

nice job , I just picked up a couple of sx650 , one works fine just needs lights , the other has a broken power switch ... decent looking unit

[@Shuksanaudio]

Oh nice! Yea they’re sweet units! The power switches do get really messed up from arcing over time. You can usually disassemble them and clean them. I have an SX-550 I’ll be doing a mod on to protect the power switch with a solid state switch. That mod works on anything with a power switch. Video should be coming in June. Thanks for watching!

[@bisarowood]

@@Shuksanaudio cool. I wonder I have a parts Sansui R70 that has a similar switch ...wonder if that could work ...

[@Shuksanaudio]

give it a shot! Cleaning the old switch isn't hard but you do have to drill out the rivets and replace them with a small nut and bolt. @@bisarowood

[@bisarowood]

@@Shuksanaudio I should say the switch is probably ok but the shaft is broken...

[@Shuksanaudio]

Ohhh shoot! Yea you'll have to replace it. @@bisarowood

[@felixlutticken5694]

I also fixed two turntables from a guy that bought my CD changer. I'm a student and that was a good way to make some additional money 😁

[@Shuksanaudio]

Nice! That's so cool! It's a fun way to tinker with gear and make some side cash. Thank you for watching!

[@peterwikvist2433]

Great video Matt. Mistakes is how we learn. Thank you for sharing.

[@Shuksanaudio]

Absolutely! Thank you for watching :)

[@jpweatherly]

My old man had this model Pioneer in his living room for 30+ years. 🤙🏻

[@Shuksanaudio]

Amazing! I bet there are some good memories with it. Thanks for watching!

[@randykyhn5585]

Thank you

[@Shuksanaudio]

You're most welcome Randy! Thanks for trusting me with the repair 👨‍🔧

[@tennysoncason772]

Nice work!

[@Shuksanaudio]

Thanks Tennyson 🙏

[@johnclintonmusicandmore]

i sent you a email thanks

[@Shuksanaudio]

Awesome! I’ll get back to you in the morning. Thanks for watching 🙏