yamaha mx-1000

moeskoeri · 16th June 2006, 02:15 PM

I recently purchased my mx-1000 second hand from the first owner. The sound is fabulous, power all over the place. I bought it cheap since the LCD power level meters seems to be broken, and since the rest of the amp is extremely well preserved (no dust, rust, or any sign of deterioration) The red backlights still work but the LCD is not functioning. Is this an easy problem to fix? Are there replacement parts? Could it be the chip controlling the LCD? For anybody who is interested I do have the manual of this amp in digital format.

anatech · 16th June 2006, 04:24 PM

Hi moeskoeri,
I'm guessing the displays are not cracked then. It's either a power supply problem or some Yamaha muting thing I'd guess, off the cuff.

-Chris

moeskoeri · 17th June 2006, 09:51 AM

That could very well be the problem, now I'll just have to find out what is causing the power problem. Will it have any use consulting yamaha about this problem? Thanks for the advise

anatech · 17th June 2006, 06:03 PM

Hi moeskoeri,
You have the service manual don't you?

Just measure for voltage where you expect it. If you have a 'scope, you can check for clock and data.

-Chris

moeskoeri · 18th June 2006, 11:31 AM

That should do the trick. Thanks

16th June 2006, 02:15 PM	#1
moeskoeri diyAudio Member Join Date: Jun 2006	yamaha mx-1000 I recently purchased my mx-1000 second hand from the first owner. The sound is fabulous, power all over the place. I bought it cheap since the LCD power level meters seems to be broken, and since the rest of the amp is extremely well preserved (no dust, rust, or any sign of deterioration) The red backlights still work but the LCD is not functioning. Is this an easy problem to fix? Are there replacement parts? Could it be the chip controlling the LCD? For anybody who is interested I do have the manual of this amp in digital format.

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16th June 2006, 04:24 PM	#2
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi moeskoeri, I'm guessing the displays are not cracked then. It's either a power supply problem or some Yamaha muting thing I'd guess, off the cuff. -Chris

17th June 2006, 09:51 AM	#3
moeskoeri diyAudio Member Join Date: Jun 2006	That could very well be the problem, now I'll just have to find out what is causing the power problem. Will it have any use consulting yamaha about this problem? Thanks for the advise

17th June 2006, 06:03 PM	#4
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi moeskoeri, You have the service manual don't you? Just measure for voltage where you expect it. If you have a 'scope, you can check for clock and data. -Chris

18th June 2006, 11:31 AM	#5
moeskoeri diyAudio Member Join Date: Jun 2006	That should do the trick. Thanks

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