Видео

Thank you for this video! I decided to replace the zener diodes (1N4742) and it works 100% now

Mines doing the same exact thing how did you solve it

Are there fuses inside that would cause the lower end of the channel not to work or for it to lose loudness? I have one that went quiet on one channel and I have to turn it way up to hear it ?

Hi, can you help? I have one of these, power light works, but amp lights don't come on, no sound, but power getting to the board and fuses are ok and nothing looks blown is there a common fault with them I should check first

Where are you located? i have this amp and its having issues

I'm experiencing this issue as well.. At first i'm not getting any audio when fully plugged in, it works when i plug it half way, but then it would swap around and the audio would stop on the sleeve but work on the tip. any idea on what I should look into? Thank you in advance!

It works! Funciona!! Háganlo con mucha paciencia 🎉

i need some of help... in my case... the amp was not used since long years ago. The clean channel sounds Perfect but the boost channel not work fine... sounds very low volume.. with aleatory noise and with a lot of power less, I have circuit diagrams. Any ideas where I should start? I'm almost sure the problem is NOT With the tubes. Prior to the failure, it has been used moderately... no more than 2 years...

Thats not a knob

Just bought one.

Hi Slightly different but i had an issue and wgen putting back together i slipped with screwdriver And i have damaged R157 and C132 on the board I dont spose u would know the value of R157 i cant identify the top any more thats all

Really wish there was a total break down of the kc 350, I have a burned resistor and I'm a novice but I know how to solder. So just needed a step by step break down. Cool video tho!

I had one of these come in, it would distort with higher input i.e. hard strumming and it would not get loud. All I did was to use Deoxit D100 on the ribbon cable connectors and it was fixed immediately.

Do you have a schemtics which you can share ?

How can I send my speakers in

I have a DSL100H, manufactured 3/2017 so not too old, bought from a college kid. I tested it before I left his house and brought it home. Never loved the tone, my MG15 with a pedal sounded more Marshall and it’s a solid state. Long story short I bought the DSL20HR, and it blew away my DSL100H. Comparing these two amps, same cabs I though I may have a blown speaker I the cab connected to the 100, so swapping cables back and forth I must’ve had an opened circuit with the speaker cable not connected to a cab between swaps and I killed it. After checking the speakers in the cab and ohms, I discovered a kinda loose spade connector so I tightened it up and made sure all others were tight but no sound. Again long story short tried both cabs, no sound. But the DSL20HR is perfect. Tubes in the 100 are a couple weeks old, matched JJs. I think I must have blown a transformer, hopefully not the circuit board. I want the DSL100HR anyway, but this is one hell of a way to force the issue. Open speaker cable from the amp, what’s the most likely cause of no sound? Tubes all glowing evenly and matched sets.

Thank you for the video 👍

😳😳😳😳😳😖😖😖😖

Hello how are you? I have the same problem and the video works perfectly, but when I press GND I hear a loud noise, what could it be?

Tonearm may float freely but this alone doesn't necessary mean the bearings are okay. Try wiggling the tonearm by gently grabbing it near the pivot point. If there is any audible or perceptible play then the bearings are probably damaged or someone has tried to adjust them already. Very very minuscule play may be okay (still better than skipping stylus) but it shows there has been a problem.

1/10th of a penny across 100,000 units is 10,000 pennies, or $100 dollars.

Wish i could hear it. Ill try latet with headphones

This amp uses DC for the preamp heaters, so the caps/diodes you replaced were all part of that circuit. Makes sense that it's quieter afterwards, good stuff 👍

Hi there thanks so much! my nephew asked me to repair his ALTO TS308 that had never worked, I followed your procedure (I could see the burnt out components on the board) and now it's working.

hello what is the problem with my 1501? He sounds okay when at low volume but when his volume is more than half. It's shrill. the sound is like a cracking

Holy Toledo!!! This worked for us! Thank you greatly bud!

Ts 310 amplifier on signal shown led LF & HF ok but no sound reason pls tell me .and make vedio shown problem

I have the same problem with my LD ICOA 12A-BT. From the power supply output has +15 and -15 volt and 3.3 volt, but the LCD Screen on the input board doesn't turn on. Any suggestions?

So you’re not gonna show us how it actually works?

Tengo problemas con uno que se plive rojo de protección al escucharlo. Y después se se protege y cuando está sonando. Se clipe y se queda pegado

you did not set bias on vr166 and vr43 ??

good morning sir thanks to share vedio nice your explanation, ihave questions to my power amplifier qsc plx3002 done replace regulator and rgvt transistor and ir 0121, sg3525an and i check the power supply section is no shorted and the output transistor ic all okey no shorted the primary power supply turn on good supply but not secondary not comes supply sir , how to determine problem thanks

Hey hello just found your video, i have a similar problem my alto ts412 signal/limit light is constantally on and no audio signal is connceted to the speaker , i have tried turning it on and off but immediately its on the led signal light comes up. What should i do ?your response will be highly appreciated

is it normal that with the second click can cause the speaker to have a crackle at the start ?

I have the same issue and ty for the video. Where can I get these capacitors at

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

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.

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

Where do you buy replacements (for my djm s-11, which looks the same as yours).

What are the specs for all the replacement bulbs?

Hello again , I just retested it and found that channel 2 also has white noise but not as much