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Clintronics RVA
Registrace 1. 03. 2014
Marshall Warranty, Audio Electronics repair, 30 years experience as a tech. Clintronics.com is based in Richmond, VA.
I don't make these to teach people that don't know electronics how to. A lot of my videos are boring examples of which wire goes where. Stuff I or other techs might need to reference.
Working with electricity is dangerous, don't do it unless you are trained.
I don't make these to teach people that don't know electronics how to. A lot of my videos are boring examples of which wire goes where. Stuff I or other techs might need to reference.
Working with electricity is dangerous, don't do it unless you are trained.
Video
FENDER HOT ROD DEVILLE repair
zhlédnutí 87Před 3 měsíci
LED not lit. No channel switching, then motorboating (HUM oscillation?)
VIVOHOME 10 Inch x 20.75 Seedling Heat Mat and 40-108°F Digital Thermostat Controller Combo Set
zhlédnutí 57Před 4 měsíci
How many mats can the controller run at one time?
RANE ONE fader repair service notes
zhlédnutí 279Před 4 měsíci
DJ ROCK CEE has a great video on HOW TO czcams.com/video/BrB3F-DTcsQ/video.html my vid is just some mental notes I made for myself RANE does NOT sell replacement faders for this model. They want you to buy the entire circuit board which they didnt have in stock at the time of this repair.
Mackie SA1232 repair
zhlédnutí 360Před 5 měsíci
Fuse not blown but power light doesnt come on. No audio. Main Board: Q26 TIP122, Q27 TIP127, Q28 BC547, R45 10R 1W, R50 10R 1W Input board: R53 2R2 .5W, R54 2R2 .5W, ICs are NE5532
SWR California Blonde No Audio repair
zhlédnutí 281Před 8 měsíci
or another name for this video could be: CHECK THE HEADPHONE SWITCH FIRST!
Marshall JCM2000 DSL401 clicking no audio
zhlédnutí 398Před 11 měsíci
Marshall JCM2000 DSL401 clicking no audio
Marshall JCM2000 DSL401repair. reverb stuck on.
zhlédnutí 105Před 11 měsíci
Marshall JCM2000 DSL401repair. reverb stuck on.
is it normal that with the second click can cause the speaker to have a crackle at the start ?
the crackle is most likely already there and the 2nd click just lets it pass to your speaker
I have the same issue and ty for the video. Where can I get these capacitors at
I get caps at mouser.com
@@clintronicsrva I changed the caps, still.not working. I'm stuck
@clintronicsrva yep it worked and then the next day was dead!
The real question is why does this happen? Happens on mine every couple of years.
Well, it's not worth getting junk IMO.
I don’t know much about electronics, but my better judgment tells me that this is really stupid. Yes, it will work… But at what cost?
Great video, thanks for posting 🤘🏽
I’m having the same issue. I replaced the O2 sensor for bank 1 sensor one and still getting an “open circuit” code. 2009 BMW 328xi coupe.
So glad you posted this
The SR two is a great machine, but these faders are a pain because they have to be soldered
I need this gray part
K E W L .
Bom dia,estou com um amplificador desse pra conserto,está com o Viper torrado e o optacoplador Conseguiria me passar a numeração desses componentes?
Can you help? I have a bx8a with a 15 amp fuse. The problem is the power cables here in the UK are all 13 amp. Can I still use the 13amp cables without over heating? Unfortunately I no longer own the original cable that came with the speaker.
sure, Theres no way this unit draws 13 amps when operating normally. If it makes you nervous then put a 12A fuse in it.
The current I in amps (A) is equal to the power P in watts (W) divided by the voltage V in volts (V): 130w/240v=.54A
How did you get these pointer knobs? Edit: Oh nvm, CR20ldx has those.
Hi Clint, I have an active pa speaker, which I've repaired as a hobbyist. Although it now powers up and no longer blows fets, the tweeter runs for about a minute and then clicks and turns to a low volume hiss. Have you come across this issue at all, I've can't isolate what's causing it
try it with a diff tweeter. If it still does this then it sounds like its going into protect and youre back to square one. might need someone with schematics to fix it.
Where do you buy replacements (for my djm s-11, which looks the same as yours).
I just google it and see who's selling what. I dont have a pio supplier.
What are the specs for all the replacement bulbs?
No idea, bought them off of ebay
Hello again , I just retested it and found that channel 2 also has white noise but not as much
fishman doent release schematics. But they will answer your question if you email them
I have a loudbox performer 700bt with the same problem in channel 1 but i don't see a Q10 in it . Can you tell which component I need . Thanks , Mitch
Yep, many of these ended up like this and are pure junk/not worth repair :(
I have my sr .. they have power but they dont detect in my pc
Is there any room on top to put a on/off toggle switch to run power? I can't stand the one's on the back of amps much like Laney and Fenders.
Im sure one could be squeezed in somewhere.
You connect the 15v split supply .where is the pin for 3.5v?
Do you have a speaker (load) connected? And do you have the Master Volume all the way down?
no load needed and it doesnt hurt to turn volumes down
Hello! I was interested in the design. I just want to understand, are the speakers completely closed in the box on the reverse side? QSC Ksub
yes
хотелось бы увидеть полный разбор коробки..
any controller can break but they can last forever and never break if your not hulking and pulling it like a mad man it will not break on you
These speakers are for PA Microphones or Guitars, etc. passive inputs. They are not for inputs from active amps with large peak to peak voltages etc. The protection zener diodes and inductors are designed to protect the impedance matching circuit from active peak to peak inputs. Using wire links is madness... unless you are savvy and only use passive devices as above which these speakers are designed for. RS COMPONENTS supply replacement components. You need to understand this circuit as no schematic is avaliable. A bit of reverse engineering is required to work out which zeners and inductors to buy.
Most people use a mixer to drive these. They're low cost powered speakers. Most people just want it to work till they get around to replace it. Havent had one come back yet.
@clintronicsrva Fair play. No criticism of you, just stating never a good idea to bypass safety components. I Am an electronics tech. My brother in law had these inputs blown up by people that did use a mixer but they turned up the input to these speaker to high......
I know this is an old video. I can’t find help anywhere. My 1/4” Jack is totally busted. Anyone know the part number or could you just use anyone! My monitor is almost unusable. I have to use tie wire and duct tape to hold the cable just right. But it sounds terrible
You just need to resolder the connector TRS, or use XLR connector
But it’s a 1200! They’re the best! Lol, this is why I bought a plx1000. 1200s now a days are too expensive and we have no clue of their history
Trye
replace that 8 diodes with 12v zener diodes and coils is available
Hello please i have Alto SMX112A the sound very low, please i need your assistance on how i can fix this problem. Greatly appreciated .
THX for the Nerdporn 👍
So did it sound good?
Is the second click the activation of the outputs? For me the outputs are switching on with delay, normal?
can I bypass the head part and use the speakers as a speaker cement for a different amp head..? Any idea how to build a speaker unit by itself
❤️ "PromoSM"
Can someone tell me whats the R5 value is for orange crush 25bx main board?…I have the same problem with the capacitors but R5 was also damaged in the positive output to the horn.
Many of them have PC board damage due to the filter caps shorting and leaking and catching fire. And often times, the control hybrids are blown up (little boards standing up near the heatsink) and those are no longer available from QSC. If you want to support these amps...and they're great amps, to be sure...then buy up examples that have one bad channel and you'll always be able to use them as parts sources for others. Replace the capacitors with long life 105C types and there's no need to go with higher value caps than the originals. You don't need to boost voltage or capacitance ratings.
Volevo chiederti ma con due valvole funziona a 50 w?
Same issue but in Channel 1 (Top) which FET needs to be replaced for the top channel
I found the FET Q10 on the top board channel 1, will replacing that FET on the top board eliminate the white noise on channel 1?
These amps are junk!!! I've been a technician for over 40 years an a professional touring drummer!! We have 4 of these boat anchors!! I've had to repair 3 out of the 4 this last one I fixed the shorted channel ran great on a Variac at 110 volts ac!! But when I plugged in to main power it blew q96/97d78/79 an the 2 ten ohm surface mount resistors!! This is after i installed the power supply restoration kit!! The schematic I have has no voltages except for the 16 an 5 volt checks what's the best way to check this pile of crack to make sure it's safe to power up ??? I've got crown amps I've had for 20 years 0 trouble!! A pro amps should be able to handle the rigurs of touring etc!! I don't trust these!! Everything checks help!!!!
anyone else have this problem everything else checks fine!
I just replaced all the same parts on a plx 3602 it ran fine on my Variac but when I plugged it into straight power q96/97 exploded an r358/359 an d78/79 opened?? I'm a tech of 38 years experience
check this out. electronicshelponline.blogspot.com/2016/06/plx-series-qsc-plx-1202-plx-1602-plx.html#google_vignette
Would like to thank clintronic for your help I fixed 2 other amps for the same custr just typical shorted drivers! Strange the problem amp ran for several hours on my Variac at 110 volts ac! An 0 DC offset an great audio wish I could find a good used board LoL I'm thinking of getting the house keeping kit.thanks again
Yeah
Hello, I have a QSC K10 that powered on, the blue light comes on, but no input signal, green signal lights from both inputs don't come on. Can you help me out? can I send the input board to you for repair?
email me at clintronics@outlook.com
Hello. My loudbox mini's reverb is not working for mic channel. Do you have any Idea how to fix it?
Hola, mi parlante tenía roto una resistencia de 0.1 ohms, la remplaze y suena genial, solo tiene un inconveniente, y es que cada vez que lo enciendo emite un ruido, la primera vez al encenderlo después de un tiempo no hace ningún sonido, pero las veces siguientes lo hace, ya revise capacitores y todo está bien, no ce si sea problema de voltajes de algún regulador o los mismos transistores, pero cuando curse mecatronica en la escuela no aprendí mucho, fue más teoría que practica, y pues como ya no continué la universidad pues me quedé solo con algún conocimiento teórico, por último la llevé con un técnico en reparación y tampoco pudo hacer nada
Hi, can u write what numbers on that board needs to be connected together? Hard to see the solding. Have same problem with 2 Alto speakers.
Hola amigo de dónde eres le quiero hacer mantención a la la Pioneer Sr yo soy de Santiago 🇨🇱 amigos
90 is too high. Marshall spec's 80. I bias my JCM 2K 100 @ 70 which is about 35ma per tube.
In his amp because the plate voltage is at 423dcv, 90mv is fine as it is more or less 70% dissipation for each tube. That seems to be the big issue when trying to bias this amp is that Marshall says to just go with 90mv and almost everyone says it is too high but even more people neglect to mention checking your plate voltage before performing the bias. If his plate voltage was higher (450-500 for example) then yes, 90mv is absolutely too much.