#128

This hi-end beast stopped turning on. It is very complex and weighs a ton. It was quite tricky to investigate the fault. Even a DSLogic USB logic analyzer by DreamSourceLab was used (perhaps was not necessary, but was fun anyway). It was found that the clock generator of the main MCU was not running. Also a reset was needed, which takes a secret combination of buttons on the front panel. It turned out that the power amplifier in this thing is a 10-channel Bang & Olufsen design based on ICEpower class D chips.

[@Deeky76]

That is one hell of a machine.... Pioneer used to make really good amplifiers but this thing's just something else...

[@brianmiller6320]

We used to have a phrase to describe equipment like this - “User friendly, engineer hostile”

[@sabbathAndy]

Just stumbled upon your video, dude you are an absolute legend! Few people understand the importance and difficulty working on equipment like this!

[@carsthatgoboom4854]

I don't really know anything you were actually doing but this was fascinating to watch. Excellent job troubleshooting and gathering all the tools (info) you needed to complete the task successfully. Thank you kindly for your content and God bless 🙏

[@takeiteasy6154]

Bravo bravo, that's what you call fault finding to the Nth level. I just loved watching your expertise, these days are a throw away society, well done, all the best.

[@robharley9838]

Always look forward to your troubleshooting approach, awesome skills! I learn things every time you shoot. Also, I really enjoy the crossover into digital realm investigations, as it's very relevant to the gear of our time, even if most of it wasn't designed for repair, i.e. "just isolate the section and replace it". Another one well done, thanks! - jrh

[@theatremad9797]

Great work. I wish I had your repair knowledge. I would love to learn how to do this sort of work. Great video. Subscribed.

[@arindamdas936]

I am amazed at the complexity of this monster AVR. And the ironic part is that about 90% of its back connectors would remain unused most of the time as the end user would most likely just use couple of HDMI inputs. This means many if the daughter boards would also remain unused. But the protection circuit would check each of these boards and even the slightest fault even in any one of the boards would render the whole unit unusable. Just makes me wonder if the whole concept of an 'Integrated' amplifier actually makes sense. Btw, amazing troubleshooting this one. I rarely see repair techs inserting logic probes between two chips. Amazing work man. Wish you luck!!

[@ronniebrown8775]

I'm amazed at how you diagnosed that problem

[@craigm.9070]

This is a serious Rube Goldberg receiver if I've ever seen one. Great troubleshooting process...that thing must weigh a ton to move around on the bench.

[@666kty3]

I have a PIONEER VSX-59TXI The top dog of the Elite. Incredible receiver/amp 160watts@6ohms in 7.1 surround. Neighbor remodeled a theater in a large home...and this was sitting in his garage covered with dust. I traded him a large air compressor for it. They retailed for $4999 new. These are incredible bargains used......

[@willmorgan365]

Fabulous video. I have one of these amps and you have just scared the crap out of me.... 🙂 All jokes aside, I would love to see your video putting it all back together.

[@largepimping]

Fascinating repair as always, thank you.

[@Edward135i]

Golden age of A/V receiver's, literally don't make them like they used to.

[@PurpleDreki]

Impressive troubleshooting, sir! Such a complicated receiver!

[@stevemajerick]

Fantastic troubleshooting job! Thank you for sharing!

[@Futschikatores]

The Sherlock Holmes of electronics strikes again. Thanks for this interesting video, great that it worked out :)

[@robbieaussievic]

.... I think he's Mycroft, (the smarter brother).

[@Truth-Machine5000]

I'd replace all the bulging caps. They may all be from the same bad lot number. Outstanding video. Thanks.

[@SoddingaboutSi]

How cool is that? Very Cool! Great job.

[@ovalwingnut]

To put it mildly... THAT IS FRICKING INSANE!!!! OMG. WTH? I've never seen anything like it. You got to warn a guy! :) I just came out of "recovery". This kind of shock could have killed me. Live long and prosper my friend.

[@adamos9879]

Excellent work!

[@andymouse]

A short update when it's back together and perhaps explain some features would be nice, very brave to take this apart !...cheers

[@aawazedost]

Great job dude. I am facing the same problem with my Pioneer VSX-ax10ai-g. The sticky ghost of standby red light flashing and no response to the power on button.

[@thomail]

Oooh my gosh ,graet job!! congrats! Brazil!

[@cambridgemart2075]

So glad that my high end TEAC receiver had a much simpler failure mode - the thermal fuse in the linear PSU transformer failed!

[@bubblehead78]

Superb work! I always enjoy listening/watching you. Question: what is the relationship between the switch mode power supply and the two large transformers (which I assume are for a linear power supply). Thanks!

[@thelazostsa]

Very nice and informative video.What you actually do with the fault working crystal clock?

[@anthonycoleman3019]

Wow amazing!!! Great job!!!

[@samuelsalins8309]

Excellent job 👍.

[@bansci]

Amazing repair, and really nice to see the insides of such a beast. Do you know if the RS232 port would output debug statements to help track down that latch up?

[@amirb715]

i second that

[@feedback-loop]

No idea about that

[@vantoanluong4109]

@@amirb715 5

[@Gamez4eveR]

perhaps the only device in existence that has both HDMI inputs and an AC-3 RF input

[@ethanzimmerzimmerlabs823]

Oh, and one last thought, do you think it would be possible to use the amplifier section on its own, without the upper receiver section? It's a nice 10 channel amp, and could be used for any number of applications if it could be setup as a separate unit.

[@Jason-zh7wo]

Nice job 👍

[@bfx8185]

Wow that's the story :D Like it so much ;)

[@davidv1289]

Wow - fantastic work! As you said, it doesn't seem like all those capacitors would bulge exactly the same amount (as they appear to have done in the video) - if caused by heat the ones closer to the fan would be less bulged. Maybe look for manufacturer's literature with pictures of their products?

[@TheFool2cool]

Yeah I've never seen large scale capacitor plague like this, I wonder like you if they're meant to look like that

[@FlyingShotsman]

Plus, it's unlikely that all ten channels were used enough to cause that kind of equal deterioration in all of the caps.

[@freedom9041]

Mine is still running great, no issues and use lot of connections of all sorts. wish it also had MC phono input.

[@TheGmr140]

Nice little radio

[@70vikingable]

This is an awesome unit with issues tho. My works but not the hdmi no inputs can be seen. So much that the display doesn't show anything but a white screen. Any thoughts?

[@againstalloddstherussiansg3206]

Первое, что нужно проверять в таком случае - кнопку. Часто встречалось в DVD и усилках - окисление контактов кнопки включения. Банальная конечно же неисправность, но, при такой сложности сборки-разборки и плюс не имение схемы, я бы поступил именно так. Если есть доступ к кнопке - брызнуть на нее химикатом под названием KONTAKT 60, поклацать ею раз сто и еще подлить, поклацать. Как правило контакт восстанавливается (если жидкость протекла внутрь) и не нужно ничего разбирать и выпаивать, как правило такой процедуры надолго хватает т.к. жидкость снимает пленку окисла и кнопка контачит как новая. Бывают кнопки герметичные (с резиновым колпачком) - тогда только разбирать панель и перепаивать кнопку. По сильному акценту я слышу что вы не нэйтив американец, поэтому пишу как мне удобно, чтобы наиболее точно выразить мысль, извините если что не так, в английском я не очень силен (собственно подписался на канал для изучения английского). С наилучшими пожеланиями.

[@feedback-loop]

Да, конечно. Я забыл упомянуть в самом начале, что тот моргающий светодиод перестаёт моргать пока кнопка питания нажата. Хорошо заметно если её подержать нажатой. Так что было сразу понятно, что кнопка в порядке. Иногда забываю упомянуть какие-то детали, которые мне кажутся очевидными. ru.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D0%BA%D0%BB%D1%8F%D1%82%D0%B8%D0%B5_%D0%B7%D0%BD%D0%B0%D0%BD%D0%B8%D1%8F

[@joeysaccordion8555]

Hello. Your videos are very informative. I would like to ask how do you learn about troubleshooting circuits. Its easy to replace blown capacitors but other than that I would like to learn.

[@bazrazin1]

so the crystal or power button led dry solder which one was the fault.

[@MrRadioGypsy]

Test those caps, since you are in deep enough into it already. I'd bet that even if many are weak, the unit isn't worth the cost of repair. The blue power led working after re-solder may be telling another story: there may be other failed solder joints. Unless it was a result of putting more boards back into the chain and completing that circuit. These units have more complexity than a home PC!

[@vadimbellous8313]

That unit is worth about $3500, so I think recapping it would definitely be worth it. It just needed a hard reset to get going again, although That LED might have just had a failed joint like you said. I've worked on a few high-end Vifa Stockholm speakers with a similar issue. After I picked apart the first one, I realized (after a long session of research) that it just required a hard reset as well. Bitter-sweet realization.😬😝

[@jdmccorful]

Put it back togeather and run it for 48 hrs. see what you see . Possibly check operating temperatures for excessive hot spots. Thanks for the look.

[@user-ed3gj8ys4r]

Good 👍 work papa

[@577473]

Awesome work! But I think I got lost at the end. Was it a faulty oscillator then?

[@antonioesposito3661]

Hi thank you for your fantastic video !… I have the unit and I need the schematic of the ice power unit and power supply can you help me ?

[@blipco5]

Beautiful work. You know your stuff. Sub'd. 👍

[@piwex69]

So, after all, what do you think it was? The cpu "stuck" somewhere or the failed resonator? Edit: oh, never mind, now I've read the description, that both things were to blame.

[@TechnSolutions]

Hello friend. Do you think a CERAMIC RES 16.0000MHZ 15PF SMD would be a suitable crystal replacement?

[@curtislee3720]

Great skills

[@Krunokia]

so basically you only need to kick the receiver out of protection mode. although great diagnostic skills and equipment you have :)

[@TechnSolutions]

Hello friend. Could you provide the crystal replacement part you used. My service manual says part CSS1653 which doesn't seem to exist anymore. Thx friend. Are you in USA?

[@antonioesposito3661]

For the power supply how capacitor you using I see that lifetime of some one are 2000 hour and some one 10000 how are the duftend and which one you recommend ?

[@Prabhu_njd]

I have this same receiver and it's dead just like this set. It's been in my store for 3 year. Just wished i was a technician lile you..😪😪

[@soulrobotics]

The only way to really know what happened is by having the firmware of the microcontrollers... or by doing reverse engineering. The resonator failure was the key to restarting everything. I would like to measure the capacitance near the resonator or the stray capacitance of the PCB. Can you make resonate the resonator outside of the PCB? Now it is working. Congratulations!. (By the way, is that Fluke one of the ones you've fixed? Nice instrument!)

[@thebood4553]

Excellent video as usual ! If you are going to sell it, skip the cap replacement, but if it's a keeper you may want to replace them.

[@ciuciulala8888]

I've never seen a frankenstein like this one before

[@IanScottJohnston]

I dont think i've ever come across electrolytic caps with an as-made from factory bulge. Might be worth investigating the brand & datasheet for one of them. Never say never though coz all of them with an identical bulge and in different areas of the unit.......you just dont see that! Expensive to change them all!

[@Trucam2020]

I think that you should replace those capacitors. Excellent and very logical process to find the malfunction.

[@domenicoorefice7269]

I have the LCD "frizz"Wath problem?awsit you info..m

[@ethanzimmerzimmerlabs823]

Terrific diagnostic work! I have one of these and it's similarly stuck in a protection mode. Can you tell me how you did the manual reset? I've searched the web and cannot find directions for the reset anywhere. And additionally, would you be interested in repairing my unit? It's a shame that this big beautiful receiver is just wasting space. It deserves to be put back into service if possible.

[@bq6162]

I have the same unit with similar issues. It powers up for a few seconds and then shuts down. Then the phase control light flashes. I called every possible repair shop where I’m from and no one will touch it. It really is a shame because up till now it operated flawlessly but now it may as well be a boat anchor.

[@ethanzimmerzimmerlabs823]

@@bq6162 So one option might be to try TRD in Nevada. They are a certified repair company for companies like Crown and Lab Gruppen. I expect someone there can fix your receiver. I don't know for sure, but that's who I would contact. TRD stands for Thermal Relief Design.

[@SDS-1]

Good grief..... All that technology just for some sound. Good video sir

[@CABohol]

Nice!

[@ryan8773]

im not finished watching yet..... You ARE BRAVE to take this thing apart. it sooo much stuff everywhere lol did you remove 500 screws? lol

[@domenicoorefice7269]

hello, I am writing to you from Italy, I am a Pioneer lx90 owner, my beloved amplifier has a problem, the lcd display fizzes continuously, how can I solve the problem? thanks Domenico

[@TheDefpom]

The doming on the triangular relief valve style cap are not even, I think all the caps are bad, I have certainly seen caps testing ok but still being no good when used at higher voltages in circuit.

[@SidneyCritic]

2940uF instead of 3600uF, that's a tough one. If it's my amp I would leave it, but if it's for a business maybe yes. Isn't it more critical for digital circuitry, ie, ripple, than analogue stuff.

[@Dont_Gnaw_on_the_Kitty_1]

The spec for electros is in the order of +/- 50 percent so they are well within spec. Being 80 volt rated though (non standard voltage) means they will be very expensive to replace.

[@ydonl]

What -- no GPIB connector? Nicely done.

[@IanScottJohnston]

You noticed as well......:)

[@OctavMandru]

Great repair work! Those caps are probably worth a fortune, is the unit worth it I wonder? How much is a working one?

[@feedback-loop]

I believe when it first came out, the retail price was around $7K

[@douro20]

The large capacitors in the power amplifier are $5 each. They are Nippon Chemi-Con KMH series and they are designed for high-ripple applications. As for it being worth repairing, these things can still command over $1000 used.

[@patrickmalone9380]

@@feedback-loop wrong they where 15 k and i paid 4 k for mine 2 years ago they top the range flag ship was 2 years in the making 1.4 kw output. Ice powered digital amp

[@feedback-loop]

@@patrickmalone9380 www.soundandvision.com/receivers/pioneer_elite_sc-09tx_av_receiver

[@Prabhu_njd]

@@feedback-loop i bought for SGD$8888.00 BACK IN 2008.

[@Aerelektronik]

Hello, good luck, I have m30626fhpgp integrated, I want to copy the file in it and duplicate the integrated, how can I do it?❤

[@82ivaylo]

It's much easy to repair simple stereo amplifier than multi channel home theater receiver.

[@garyhunkin]

You are brave..

[@santretaylor4352]

I wonder if he could fix mine.

[@adambittner6187]

I have the same unit works flawlessly , what i need is the firmware update can anybody help me with the link or any info please leave a comment thanks

[@mihaibalint8183]

very nice, but why don't yo do self diagnostic?

[@feedback-loop]

please tell more about that

[@illusion3847]

Well i am an IT guy. cant even figure out what he is doing still loving the video although ❤️👍

[@dmytros3675]

hy can u pn me Please i have a Question for my Pioneer receiver.

[@rubusroo68]

I'd change them while you've got it disassembled but I'd ask the customer 1st

[@bigjohn2811]

Specs 7 x 200 watts 20 Hz to 20 kHz 0.05% THD all channels driven and is weighs just over 70 pounds. Definitely not a lightweight in power or mass. This is a class D amp (ICE power).

[@patrickmalone9380]

Its not 7 channel its 11 and 1.4 kw ouput

[@tommygunzz7586]

@@patrickmalone9380 I still use this robeast! It’s actually 10 channels (200x 7 watts and 10 x 140 watts) 20hz to 20khz 0.05 THD with all channels driven…

[@jrsnewsgroup8323]

Ну ок.. видео пойдет.. молодец.. но английский- это нечто )) сделал мой вечер

[@rogervonschleusingen4603]

I prefer old school stuff, this piece way to complicated, where do you start to troubleshoot, and how much would it cost to find problem $$$$$$ . old school 2 channel the way to go !!

[@hottorchbeats4739]

Did I miss something? Did you disassemble the unit before looking online for reset info and trying simpler diagnostics. If I have a pain in my wrist. And a nail in my shoulder, do you cut into my wrist before removing the nail?

[@feedback-loop]

Oh, what a shame. I must have screwed this one up entirely. Luckily the video is not upside down. Your example with a nail is so relevant. Thank you very much.

[@patrickmalone9380]

Just put back togther run it see how it works

[@morlock9216]

Какой акцент, какой акцент.😂 До Мутко конечно как до Луны, но так явно слышимо.

[@Kirill_Maker]

Definetely they needs to be changed

[@user-bp2sd4cc1b]

По - русски то чего не говоришь?

[@user-mk5qq2ih5k]

Зачем выпускать видео на английском языке, ты же живёшь в России, хотел узнать про ресивер, но ни черта не понятно

[@feedback-loop]

Попрошу повежлевее. Откуда вы взяли, что я живу в Росии? Зачем делать видео на русском, если англоязычная аудитория во много раз больше? Вы в самом деле полагаете, что это моя проблема, что вы не понимаете по-английски?

[@user-mk5qq2ih5k]

Куда вежлевее? Я нормально спросил, не важно где Вы живёте, главное что Вы русский человек, хотел послушать про ресивер, информация полезная!