Roland Micro Cube schematic needed

[toby2]

Hi , the input jack section is damaged . Does anyone have a schematic for a Roland Micro Cube amp that they could send out ? Thank you !

 

[JonSnell Electronic]

This may help.
https://elektrotanya.com/roland_super_cube_bass_scb_40_60_100_service_manual.pdf/download.html

 

[JonSnell Electronic]

Maybe here'
https://www.google.co.uk/search?q=r...=Y5YyWe_2CuaRgAbTgbvABw#imgrc=oVmlnwSBLh0vWM:

 

[toby2]

Schematic needed for Roland Micro Cube amp

The input jack area is cracked . I need a schematic for one of these : https://www.roland.com/global/products/micro_cube/

 

[JMFahey]

Maybe somebody has it but in any case follow the cracks and bridge across them.

Scratch the solder mask so you have access to shiny tracks copper so you can solder.

 

[blackcorvo]

This could be helpful, maybe? The Repair Bench: Roland Micro Cube - GuitarKitBuilder It was in the results for the google search posted by JonSnell.

 

[dotneck335]

I still can't find a schematic for the Roland Micro Cube amplifier---tried the links above, no help. Anybody got?

 

[JMFahey]

I still can't find a schematic for the Roland Micro Cube amplifier---tried the links above, no help. Anybody got?

Even if you get it, which I doubt, you will NOT be able to home build one, sorry


It´s all a digital nightmare (for a home builder) , just check the preamp:

 

[blackcorvo]

I still can't find a schematic for the Roland Micro Cube amplifier---tried the links above, no help. Anybody got?

Schematics aren't gonna help you on a cracked board/input jack repair.
Read the link I provided before carefully, they show how they've worked on a similar repair and that could help you a lot more than any schematic.

I work maintenance, and I pretty much never use a schematic for repairs, because in most cases, there isn't one available. Sometimes, I have to draw the circuit myself to figure out some issues, but this doesn't seem like the case for your issue.

If you need help, get some GOOD QUALITY photos of the damage (both sides of the board, the input jack itself, etc), post them here, and we might be able to direct you in the correct path for this repair.

 

[dotneck335]

I'm not the original poster; just looking for a schematic to see how they did things, and to pick a point to add a Class-D amp & maybe disable their power section to save power....... I did write to Roland and requested a schematic.....probably no hope, but worth a try.....we'll see......

 

[blackcorvo]

I'm not the original poster; just looking for a schematic to see how they did things, and to pick a point to add a Class-D amp & maybe disable their power section to save power....... I did write to Roland and requested a schematic.....probably no hope, but worth a try.....we'll see......

Okay,my apologies for that assumption.

The easiest way to find the power amp chip is looking where the speaker connection goes to. Also, check the headphone output and see where that goes. If it's not connected to the output of the power amp, you could use it to connect into your Class-D amp of choice.

 

[Gnobuddy]

...looking for ...a point to add a Class-D amp & maybe disable their power section to save power

A friend has a Roland Microcube. He wanted to use the effects and models in it with a different external guitar amp. I tried the simplest solution, running a standard 1/4" guitar cable from the Microcube's headphone out jack to the input jack of the other guitar amp.

It works reasonably well. The Microcube's internal speaker cuts out when you plug into its headphone jack. The Microcube's internal power amp is most likely still drawing quiescent current, but that should be a lot less than its current draw when it's driving the internal speaker.

-Gnobuddy

 

[dotneck335]

Per my request for a Micro Cube schematic, Roland says:
"Due to liability reasons and copyright protection, our corporate headquarters at Roland Japan distributes Service Manuals to authorized service centers only."

 

[Emil12]

Good afternoon. I will raise the topic. Need a circuit from (Roland MICRO CUBE T225. The chip of the controller PWM burned out. Do not determine its value. Thank you for your help

 

[Mooly]

No need to repost Emil If someone subscribed to the thread can help then they will reply... good luck.

 

[Emil12]

Thank you. Ok