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Ray Gianelli
United States
เข้าร่วมเมื่อ 2 ธ.ค. 2013
I was one of those kids that took everything apart to see how it works. 60 years later I still do. Only difference now is I put them back together!
Join me as I repair vintage audio equipment, test equipment and other electrical/electronic items. I'll share my process, my troubleshooting philosophy, how to read schematic diagrams and test electronic components.
My focus in creating this channel is to share the things I've learned about electronics. This is the only way that technicians can reproduce. Please subscribe so we can make this journey together!
Join me as I repair vintage audio equipment, test equipment and other electrical/electronic items. I'll share my process, my troubleshooting philosophy, how to read schematic diagrams and test electronic components.
My focus in creating this channel is to share the things I've learned about electronics. This is the only way that technicians can reproduce. Please subscribe so we can make this journey together!
วีดีโอ
Marantz 2230 Tuner Repair and Restring
มุมมอง 1.4K3 หลายเดือนก่อน
This video shows the steps taken to diagnose poor tuner sensitivity, and how to (and how not to) restring a tuner. Brian Beezley's web site: www.ham-radio.com/k6sti/match.htm #electronic #electronicrepair #vintageaudio #audio
Pioneer SX680 Repair
มุมมอง 1.2K3 หลายเดือนก่อน
This receiver had barely audible, highly distorted sound in both channels. This video outlines the steps taken to diagnose the problem and repair it. #electronic #electronicrepair #vintageaudio #vintagestereo #audio
JVC JR S200 Random Blast of Noise
มุมมอง 8934 หลายเดือนก่อน
This receiver would play music, but occasionally would emit random blasts of noise, sometimes extreme enough to throw it into protect mode. This video outlines the steps taken to clear that issue, as well as other noise issues. #electronic #electronicrepair #vintageaudio
McIntosh C31V Volume Control Issue
มุมมอง 1.1K4 หลายเดือนก่อน
This video outlines the troubleshooting steps taken to repair an unresponsive volume control. Unlike vintage analog volume controls, this one is electronic. #electronic #electronicrepair #vintagestereo #vintageaudio
Distortion Analysis: I've been doing it all wrong
มุมมอง 1.4K5 หลายเดือนก่อน
I recently learned that my distortion analyzer had been connected in a manner that leads to higher than normal readings. This video demonstrates this, and the steps taken to correct it.
Neumann V402 Mic Pre
มุมมอง 4405 หลายเดือนก่อน
While this video shows the repair of an expensive esoteric piece of studio equipment, the troubleshooting steps are common to any piece of electronic gear exhibiting similar symptoms. #electronic #electronics #electronicrepair
Just a quick update
มุมมอง 1.2K6 หลายเดือนก่อน
Just wanted to sign in and tell everyone what's been up.
Luxman LV 105U Phase 2 Driver Board
มุมมอง 8588 หลายเดือนก่อน
Time to tackle the driver board in this episode. As bad as I thought it was, it was even worse! #amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Luxman LV 105U Phase 1: Power Supplies
มุมมอง 8648 หลายเดือนก่อน
Power supplies are the heart of any electronic system. In this video I go through the various power supplies in the amplifier, replace missing parts and verify operation. It's gonna be a while before this thing puts out any music! #amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Onkyo TX SV727 Repair of Remote and Broken Pot
มุมมอง 9148 หลายเดือนก่อน
This video shows the steps taken to repair any remote control with dead buttons, and how to replace no longer available potentiometers. #amplifierrepair #electronic #audio #electronicrepair #vintageaudio #electronic
Luxman LV 105U Repair Project
มุมมอง 1.2K8 หลายเดือนก่อน
Preliminary evaluation and repair plan. This is an interesting design containing BJT transistors, vacuum tubes and MOSFET's. It had been worked on, and parts are missing. Let the games begin! #amplifierrepair #electronic #audio #electronicrepair #vintageaudio
Realsistic STA 2280
มุมมอง 1.1K8 หลายเดือนก่อน
This video outlines steps taken to repair a no FM reception condition, as well as an issue with the power meters. #amplifierrepair #electronic #audio #electronicrepair #vintageaudio
Realistic STA 77
มุมมอง 4.7K9 หลายเดือนก่อน
This video outlines a repair to a defective channel, which affected the other channel, and also clearing issue with no FM stereo operation #amplifierrepair #electronic #audio #electronicrepair #vintageaudio
Yamaha MX1000 Repair #amplifierrepair #vintageaudio #vintagestereo #audio
มุมมอง 3.5K9 หลายเดือนก่อน
Yamaha MX1000 Repair #amplifierrepair #vintageaudio #vintagestereo #audio
Yamaha MX1000 #Shorts #vintagestereorepair #yamahaamplifierrepair
มุมมอง 54210 หลายเดือนก่อน
Yamaha MX1000 #Shorts #vintagestereorepair #yamahaamplifierrepair
Sansui AU 719 Stereo Integrated Amplifier Initial Evaluation and Restoration
มุมมอง 7K11 หลายเดือนก่อน
Sansui AU 719 Stereo Integrated Amplifier Initial Evaluation and Restoration
Sansui AU 719 Bad Power Transformer #electronic #audio
มุมมอง 4K11 หลายเดือนก่อน
Sansui AU 719 Bad Power Transformer #electronic #audio
Adcom GFA 555 Internal Protection Update and Correction
มุมมอง 1.4K11 หลายเดือนก่อน
Adcom GFA 555 Internal Protection Update and Correction
Installing an Internal Protection Relay in an Adcom GFA 555 IMPORTANT: READ DESCRIPTION!
มุมมอง 3K11 หลายเดือนก่อน
Installing an Internal Protection Relay in an Adcom GFA 555 IMPORTANT: READ DESCRIPTION!
Sony TA N77ES Power Amp: Making it Work with Missing Speaker Selector Switch
มุมมอง 2.4K11 หลายเดือนก่อน
Sony TA N77ES Power Amp: Making it Work with Missing Speaker Selector Switch
Sansui 9090 Replacing Speaker Terminals with Banana Jacks
มุมมอง 1.2Kปีที่แล้ว
Sansui 9090 Replacing Speaker Terminals with Banana Jacks
Sansui 9090DB Pops When Bass Control Engaged Solved
มุมมอง 840ปีที่แล้ว
Sansui 9090DB Pops When Bass Control Engaged Solved
Sansui 9090DB Restore Part 7 Tuner Alignment and Final Testing
มุมมอง 1.7Kปีที่แล้ว
Sansui 9090DB Restore Part 7 Tuner Alignment and Final Testing
Thanks for all you've done for the community! Best of luck to you in your future Ray!
❤
Glad to know you are doing somewhat well! I am currently one of those kids taking everything apart and messing with it, my last project (adding a fan to a Technics SU-V8) didn't end well though. I ended up having two smoking resistors and some part pulling way too much current, but i can not figure out what it is. After almost a month of tinkering and testing, I think i need some help. Would it be possible to contact you and receive a bit of help? Of course only whenever you are free and willing, and id love to maybe give something back to you somehow Cheers
Hello Ray, no need to apologise, life is complicated. Hope your move goes well and brings what you need into your life, regards Kevin
That’s a lovely, simple and sincere video explaining clearly how to properly make the right thing from a sincere and professional electronic engineer. Like and subscribed straightaway. 3 Years old uploaded video!
I have missed the informative, educational, and useful content.
Good to see you Ray !.......Many of us were kind of worrying ......hope to see you back soon . We all like you ....
Best wishes Ray, we miss you !
Thanks, I miss interacting with you guys too! I've come in contact with amazing people since starting this channel.
Good to see you Ray. Take care
Thank you. I've gotten rid of a bunch of stuff, and found a fairly nice garage under all of it!
Nice to see you back Ray ! and hope you can keep the electronics going wherever you may move to. Move somewhere without such a high chance of storms.. come on up to the northeast !
I don't mind the storms themselves. The insurance is just brutal, and with many insurers pulling out, the prices for coverage are simply obscene. We'll see where I wind up!
I have a 1991 Hitachi stereo system and I have a similar type problem with the radio section. When I turn on the radio, there will be static and crackling on all wavebands, but then I will turn the machine off and on again, sometime later and all the stations will work . . . and on all wavebands, but it will then slowly fade out after about two minutes and it's back to static and crackling again. Any idea what might cause this?
Good to hear from you Ray! Moving back to the people’s republic of New York?
I wouldn't rule it out. I liked living up there, and when I visit relatives I think about it. But I may strike out for somewhere different. I plan to visit some friends around the country and see where they live and how they like it.
Ok Ray be safe man !
Thanks1 Sometimes I wonder how I made it to this age with all my limbs and appendages. 😆
Best wishes Ray!!
Thank you. What I really need is a backhoe. It's frightening how much stuff accumulates over time!
Happy to hear you're okay. The update is appreciated and I'll be here when you get back to the bench. Peace.
Thank you. I still have a few things that belong to others, and a few sizable items that need repair before sale, so I hope to get to those things soon!
Thanks for the update, I subscribed just before you "disappeared". I enjoy your videos a lot! I'd say no worries about needing some time away from your channel; it's not like you're charging people to watch them. lol Life happens. I'm glad you're doing well. :)
Thank you for your understanding. I tend to focus deeply on whatever I'm into, at the detriment of other things. When I looked up from the bench I was appalled at how much stuff had accumulated!
why leave florida ??? florida is supposed to be great !!!
i left in 2002 after 10 years, it wasn't that great. pay scale has gotten better but nothing else has.
Actually Florida is nice. But like many nice places, the cost of living is skyrocketing. And the real driver of wanting to leave is the cost of windstorm coverage.
Good to see you post up Ray - good luck and if you do move, the silver-lining is it's new workbench time!
That's a really good point. I've certainly refined what I think a good layout looks like since I started.
Glad all is well; any idea where you want to move? I lived in the panhandle for 11 years (80's-90's)...sure do miss it!
Somewhere where windstorm coverage won't bankrupt you.
Thanks for the update Ray, really missing your videos. Good luck with the tasks at hand!
Thanks David. And yes, it's tasks plural. Everything I do points out 2 others that need doing.
Good to see you are well, and I hope you can sort shit out and fix stuff with us !. The UK is nice this time of year if wanna move a long way !....cheers.
Andy! TBH, I'm not ruling out anywhere. Retirement is just around the corner.
@@raygianelli3612 :)
Hey Ray, Glad you're doing well! Are you selling any test equipment?
I may have a few signal generators.
Good to see you haven't given up entirely.
Nah. That's Step 2. 😁
@@raygianelli3612 That's when the withdrawal starts ...
I'm glad you're doing well. Move to Kansas and watch the tornadoes with the rest of us.
Yeah, tornadoes and earthquakes freak me out. At least with hurricanes we get ample notice!
Miss you friend Take what time you need and thanks for allowing us to know . Peace my friend
Thanks for the sentiments. They're much appreciated!
I was just thinking about you. “Where is that guy?” Good your working on life. Like the rest of us.
Some days life's working on me... or working me over. 😆
Good to see your well.
Thank you. I honestly didn't realize how long I'd been away until I saw messages asking if I was OK. I feel a bit guilty about that.
@@raygianelli3612 No need for the guilt. Good luck the life changes coming your way.
good to hear from you ray. hope to see some updates on that luxman one day. :)
I'm still having nightmares about that thing!
@@raygianelli3612 🤣 i had nightmares about my sx3900 and that was only concerning disassembly/assembly. it's repaired but the full resto is still not finished. i pick at it whenever i feel that i've got it too good and feel the need to be abused.😂 stupid pioneer. at least my colorful vocabulary expands with every session.
Hi Ray!
Dude! 😁
I've been recapping old Atari power supplies and motherboards . I noticed it's only certain caps , the same ones, on all the systems that are bad, most are perfectly good after 45+years.
I've seen similar things. A lot of 6.3 volt electrolytics fail, and of course anything near a source of heat. The failure frequency of electrolytics is nowhere near what the majority of the internet believes. 😁
I like your organization method!!
Like a lot of things, I came by it the hard way. Losing parts, mixing up parts, you name it. Finally hit upon bags in bags.
If that is a stereo amplifier, doesn't the second channel need a load also while the other is under test?
It doesn't need a load to prevent damage, unless it's a tube amp. There may be a small difference is power measured, since most amps are rated as "both channels driven".
Are you OK, Ray? Long time no see you…I knew about your vision problems from your own words, but…I hope everything’s fine for you, man. I send you all my strength from Spain ❤
Hi Fichamba. It has been a while. I've been so busy I didn't realize just how long it's been! I'm fine, just trying to get my home ready for sale. Apparently I let a LOT of things slide while I was working on the bench. Thanks for reaching out, and for the well wishes. I truly appreciate you!
Thank you for your answer, Ray! Bufff, good news, you are fine. I miss your videos a lot, but the first is the first! (by the way, my real name is Jesus…). Anyway, I still deserve all the best for you, Ray. A big hug from Madrid!
Hola, Muchas gracias por la tremenda explicación brindada. Es un gusto poder encontrarse con estos videos tan valiosos en la plataforma, Saludos!
Thank you for the kind words, Michel! Many wonderful people took time to teach me these things, and now the time has come to pass them on.
I have added an insulation tester to check them at 1000, 500 and 250 VDC as well as my Atlas ESR+ but I'm dealing with 50's guitar amplifiers.
Yeah, I've got an old Sprague Tel-Ohmike that I use to test them at a higher voltage. Worst shock I ever got in my life was from an old Marshall that had been unplugged for about 10 minutes. I was still pretty green then, but that was the day I learned why bleeder resistors are a good idea!
Keep in touch Ray. Your content is excellent..
Thank you! I've been trying to catch up on all the stuff I need to do around the house that didn't get done because I was on the bench all the time. Turns out that it's waaay more than I thought. 😆
Ray, nice video as always. I just picked up a 8904A unit. The display is OK, but not super bright. I was wondering where you got a replacement display for the unit? Was it an exact match, or did you have to make some modifications to get it to fit in. Thanks in advance... Robert, San Diego
I recently completely re-capped my Cat. Now it's barking!
But if you used audiophile caps the barking would be smoother and have more depth. 😝
20 years never had a isssue with Adcom…
Hey mate. Love your videos. My 717 is not in protection mode but seems to be some poor audio coming from both channel. When moving volume and balance controls and when touching nothing. Any idea where to start? I wish certified tech was an option. All those local are far outside budget and shipping is beyond budget alone. Thanks in advance 👍
"Poor audio". is a kind of generic term. But usually when both channels are affected it points to power supply issues. I'd start by making sure that all the voltages are within spec. Be very careful not to short anything with the meter probes, and as always, anything you do with the covers off can expose dangerous voltages, and you do so at your own risk.
Ray Gianelli Panasonic VP 7725 Audio Analyzer Where can I get it
Depends where you are. They're harder to find in the US than in Asia. But they are available in either place. They're usually not cheap.
Glad I watched this. Timing couldn't be better. I recently took my old Marantz 2220B and assumed it would have degraded if it worked at all. I took it out of storage and it has a lot of static and I the left channel didn't work. So I bought a refurbishing kit on Ebay and while waiting, I cleaned the inside circuit boards thoroughly, cleaned the pots and re-lamped. I also bought new speakers with high-quality cables and when I turned it on, not only did it look brand new but it also sounded beautiful. It's been so long since I heard it that I'm not sure whether it has degraded or not. Cleaning the pots clearly improved the performance but I don't trust my ears or judgment to assess the sound being so good because the receiver hasn't deteriorated but rather sounded great because of the speakers and better cables. So I am putting off refurbishing until I've given it a good listening, maybe a month or two and make a decision. I'll probably replace the two relay caps since that is easy and are the most expensive and are supposedly higher quality than the originals. After watching this video, it helps to learn that this is not unusual for Marantz receivers. But nothing lasts forever and I could head off a wave of problems if I don't recap. Maybe. I won't last forever either so there's that.
FWIW, I just recapped a Marantz 2230 for a friend. I checked all the caps I pulled. Not one was bad. A lot of it has to do with design, quality of the caps use and whether or not the unit was exposed to excessive heat. But as you point out, nothing lasts forever, and no one expected these units to still be in use 50 years later. Just don't expect a night and day sound difference if the old caps are still good. The filter caps are usually the most expensive. Not sure what you mean when you say relay caps.
@@raygianelli3612 Thanks for your reply. And I did mean filter caps. The new ones provided are much higher voltage which worries me a little but they are probably the ones most likely to give out. A few of the other parts supplied also were higher voltage. It's taking me time to plan out in great detail how I would proceed so it's giving me a lot of time to do a lot of listening before I decide. And advice like yours is going to be a great help along the way. Thanks and keep up the good work.
Great learning brushing up root cause to fault finding on bias issues
Thanks Jack. Learning never stops!
Ray, it’s been two months since you posted. I hope you are not sick/injured but just busy at work.
Hi Bill! No health issues, just decluttering and cleaning. Looking to sell the house and get out of Florida.
@@raygianelli3612 glad to hear there are no health issues. Does this mean you have retired?
@@bill_p2074 Not yet. Gotta squeeze 'em for every dime before I go. 😁
New to your channel, i adore the quality of these scopes. I have a 454a without beam at all; a ht issue i think. Without primary acting dangerous what tests can i make.? Thanks for this video!
Well, I don't know if you saw the second video, but my HT issue was caused by a failed rectifier in the LV supply. Ensure that you have all the low voltages first. Appreciate the thanks!
While I understand your logic about C701 being a film cap due to the 250v requirement, is the schematic just wrong because it has a polarity marking next to it which implies it is an electrolytic?
Marantz schematics are notorious for errors, and this looks like yet another. OTOH, I'm grateful for any schematic, errors or not!
Thank you this is very helpful. I just picked up a tektronix 2235 as well as a 305 DMM so this is going to be my crash course.
Nice to hear! Joseph, I did a series on oscilloscopes. You can find it here: audiokarma.org/forums/index.php?threads/oscilloscope-basics-part-3-measurement-configurations.847989/
when replacing caps its a good idea to test outside foil and observe placement
wax paper caps may still be good if the unit lived in a dry place. not so if humidity was high.
I am an experience electronics expert. I agree with most of what you say. shotgun replacement of parts is not a fix it all cure for every problem. I just replaced all the electrolytic caps in my pioneer sx-34b i used nichicon high grade japan caps. one change was to up the final stage cathode bypass 50 uf with a 560 uf cap. unit plays perfectly