I just moved into a dorm room and for the first time I've started having problems with this unit. The tone direct keeps turning off and on by itself randomly and periodically while I'm listening to music. As you can imagine, this is very irritating. I try to push the power button on the machine itself but that doesn't work. I have to use the remote to turn it on and then I can push the button on the machine to turn it off. When I go to push the tone direct button on the machine, it switches to VCR.
The board for your preamp/switch/vol are made as an electric matrix. This means that several signals are coded and sent from the "frontpanel" to the amp itself. A digital signal like this will be hard for someone to measure and understand without a oscilloscope.
My advice is to clean and check all connetions (inside the amp), but mind the hazardous currents inside.
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On the Remote Control
2 Use selection button to select "ON".
ON : Allow tone adjustment (bass, treble).
OFF : Playback without tone adjustment.
The tone cannot be adjusted in the direct
to select an item to be set, and use
to select a setting value.
Bass : Adjust low frequency range (bass).
• -6dB - +6dB (0dB)
Treble : Adjust high frequency range (treble).
• -6dB - +6dB (0dB)
"Bass" or "Treble" can be set when "Tone Control" is set to
The protection mode has activated. Reset the protection mode as follows and see what happens.
Connect power cord to mains and wait 5 seconds or so. While holding down "info" and "tone control" buttons, press "main zone" power button briefly and release, but keep "info" and "tone control" buttons pressed for at least 3 more seconds. The unit should power up. Assuming the reason for the protection has passed or been fixed, the unit can now be turned off and then back on with the "main zone" power button to restore normal operation mode. If the protector activates again, the fault is still present and the unit needs to be repaired, ideally by a Yamaha authorised repairer. There are dangerous voltages present in high power amps and a lot of grunt in terms of stored energy - best left to trained technicians.
Hi. I also have a DP-51F and am experiencing severe problems with tracking. My sense is that the tone arm may be damaged. Would you be willing to sell parts from your turntable if you're not going to repair it? Let me know as I would be interested.
hhmmmm, I searched through the manual to find this info for you. It appears that the tone adjustments are initiated by the "tone" button on the REMOTE. I could not find any reference to there being a button to do same on the front of the unit. Odd, but there you go.
Use the tone key(on remote) to get "tone" up on the front of the unit.
Then using the multi up-down keys, turn the "tone on".
Once you have got to here, use the tone key to select "bass" or " treble"
Using the multi up down keys, adjust the tone controls to your liking with the multi up down keys