Krell FPB 600 68HC711E9

[marek.kmosko]

Hello friends. I have an amazing Krell FPB600 amplifier. Unfortunately, both MCUs are faulty. Can anyone direct me where I could get a new MCU? Or would a suitable firmware suffice? Thanks.

 

[audiotemp]

Those aren't parts that should ever fail. What makes you think they are bad?

 

[marek.kmosko]

Those aren't parts that should ever fail. What makes you think they are bad?

my krell had other problems. they damaged both MCUs. one doesn't work at all and the other has some inputs and outputs damaged.

 

[audiotemp]

I think you would have to replace the whole board. Or do you have reason to believe those other nearby chips were not damaged also?

 

[marek.kmosko]

I think you would have to replace the whole board. Or do you have reason to believe those other nearby chips were not damaged also?

I don't need to change the entire boards. All other chips are replaced. The amplifier is currently completely authorized. I only need the MCU itself to make the amplifier work as a whole.

 

[audiotemp]

But which one of the many versions?

 

[marek.kmosko]

But which one of the many versions?

The attached photo shows the version. 1.75 50/60

 

[audiotemp]

That is the firmware version. You will need to program the chip with Krell firmware after you find a new chip. Do you have a copy of the firmware?

 

[audiotemp]

Unless you replace the whole board...

 

[marek.kmosko]

That is the firmware version. You will need to program the chip with Krell firmware after you find a new chip. Do you have a copy of the firmware?

I already have the new blank chips. I don't have the fw though. I ordered the programmer and it will arrive next week.