Hey Ray, I wanted to take a moment to share some feedback on your recent video. I really appreciated how, towards the end, around the 11:01 mark, you took the time to summarize the key points and lessons learned. It was a great idea to provide viewers with a reminder of the symptoms, the diagnostic process, and ultimately how the issue was resolved or partially resolved in this video. While it may not have been a new concept, I felt you executed it exceptionally well. It really stood out to me, and I wanted to acknowledge that. Judging from the comments, I am impressed by your engagement with the audience. Few creators seem to engage at this level. Thank you for your dedication and keep up the excellent work!
@raygianelli3612
7 ай бұрын
Thank you for the kind words! I feel it's important to not only show the trouble, but also show the steps that led to successful diagnosis. And the thought processes that go along with that. I try to read and respond to the messages my viewer's leave, not only to thank them but to acknowledge when they've taught me something as well, which happens frequently.
@Trucam2020
7 ай бұрын
Dear Ray, Excellent repair video as usual.🎉
@raygianelli3612
7 ай бұрын
Thanks Uri. Always nice to hear from you!
@bmboldt
7 ай бұрын
I am an intermediate at this point fixing equipment. When I saw the channels on the scope at the beginning I said to myself, "looks like a bad negative rail voltage". I think I am getting the hang of it.
@raygianelli3612
7 ай бұрын
It sure sounds like you are. Good job!
@Edisson.
7 ай бұрын
Hi Ray, when I turned off my computer at night and was almost asleep, I got a notification on my mobile about your new post - I posted it at breakfast 😁 It's an incredible coincidence, but yesterday I was buying and changing this hundred Ohm resistor in the power supply - u it was not an amplifier, but a source from a domestic dishwasher. Super fast diagnosis and repair, and in addition, the Panasonic display lit up beautifully 😂 Nice day 🙂 Tom
@raygianelli3612
7 ай бұрын
Thanks Tom! My mobile goes into Do Not Disturb when I go to bed. Got enough trouble sleeping at my age!
@alfonsoincorvaia2595
7 ай бұрын
Great video Ray!!! I'm working on a Tektronix 2465 scope, It's dead. I will be checking all caps and the usual from the power supply side. Your information here, has opened up some more ideas to troubleshoot. Thank you Ray!!!! 🙂
@raygianelli3612
7 ай бұрын
They can be difficult to troubleshoot, Alfonso. Good Luck!
@alfonsoincorvaia2595
7 ай бұрын
@@raygianelli3612 Thank you Ray, I'm going to need it! lol 🙂
@dualityrepair4770
7 ай бұрын
Just like Jenga. It only takes one component to bring it all down. Good work.
@raygianelli3612
7 ай бұрын
Thanks Nick! Jenga, what a great analogy.
@tsOnMedia
7 ай бұрын
Excellent video as always, Ray! Glad you mentioned not fixating on one suspect area. I've been guilty of that from time to time.
@raygianelli3612
7 ай бұрын
You and me both! The trick is to know when to stop fixating and regroup. Still working on that.
@Wil_Bloodworth
4 ай бұрын
Nice video Ray! Thanks.
@g.fortin3228
7 ай бұрын
Very good ! I bet you find more issues and have that thing singing nicely again !
@raygianelli3612
7 ай бұрын
Actually is sounds pretty good now, at least on my bench speakers.
@Douglas_Blake_579
7 ай бұрын
LOL ... Great minds think alike ... watching the scope we both said "Negative Power Supply" at exactly the same moment. Good catch on that supply decoupling resistor.
@raygianelli3612
7 ай бұрын
Thanks Douglas! But if your mind thinks anything like mine I would seek professional help. 😝
@scrappy7571
7 ай бұрын
Quick and easy diag. Hope the distortion is just a dirty switch. Always good when the stk's work too.
@g.fortin3228
7 ай бұрын
may even be a good time to clean and regrease em'
@raygianelli3612
7 ай бұрын
I was thinking dirty switch as well. And yeah, agreed about the STK's!
@andymouse
7 ай бұрын
Great work Ray....cheers!
@raygianelli3612
7 ай бұрын
Andy! Nice to see you again. For once it didn't take me much longer than the video to home in on the issue.
@mkach2521
7 ай бұрын
Presto! Great job.
@raygianelli3612
7 ай бұрын
Thanks! Some are a little easier than others.
@willievivanco1
7 ай бұрын
good thinking finding out the culprits😮 ray
@raygianelli3612
7 ай бұрын
Thanks Wilfredo! The schematic lists 4 more fusible resistors, but this unit didn't have them. the 4 in question are carbon film in this unit, which is fine.
@rangers66
7 ай бұрын
I recently finished repairing and restoring two SX-680s. Sounds like R410 is a common issue for these receivers but that wasn't the case for the ones I worked on. Makes me think maybe I should be proactive and replace em anyway.
@raygianelli3612
7 ай бұрын
The schematic I worked from showed 5 fusible resistors, but R410 was the only one actually in the one I worked on.
@bill_p2074
7 ай бұрын
Ray, I’ve got a SX-680 I need to work on. Not wishing you trouble, but I wish you had more work to do on it so I could observe. Good catch on that resister.
@raygianelli3612
7 ай бұрын
Bill, if you hit a snag reach out to me via email. The address is visible if you click the arrow next to the "I was one of those kids"description.
@bill_p2074
7 ай бұрын
Thanks! I hope I don’t have to bother you but I certainly appreciate the offer.
@t1d100
7 ай бұрын
Excellent, Ray! Thank you! For me, the power rails being skewed to the positive side did not bring to mind a negative side rail problem. Makes sense. Now, I have that in my tool kit. I am not familiar with this type of resistors (fire proof.) How would I search this at Mouser? What terms? Thank you, for this help.
@robertcox5228
7 ай бұрын
Nice job. If the positive supply has the same resistor could channel imbalance be due to resistor drift. Worth replacing?
@raygianelli3612
7 ай бұрын
I don't think this unit is set up that way. I did see 4 more fusible resistors on the schematic, but they're not in this particular unit
@cirilolevitt2943
5 ай бұрын
💪 'Promosm'
@thedistortedguy
7 ай бұрын
If the dim bulb shows short how do we give signal to the amp , i mean should we let it stay switched ON on a dim bulb ?
@thedistortedguy
7 ай бұрын
While giving it input signal
@johnnytacokleinschmidt515
7 ай бұрын
Find and remove overload or short first.
@raygianelli3612
7 ай бұрын
Johnny is correct. The dim bulb indicates whether the unit under test is pulling excessive current. Then you turn it off and look for shorted devices.
@Douglas_Blake_579
7 ай бұрын
If you're showing a short, trying to feed a signal into the amp will only make the problem worse. As the others have said, shut it off, get out your ohm meter and look for the short.
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