Hi Folks,
I have a Yamaha RX-V630RDS tuner amp, multi channel DSP.
The problem is confined to the tuner module.
I have negligible knowledge about electronics but can use test equipment and soldering kit.
The problem is that this unit self-tunes, but the sound is "off", like when you tune an ordinary radio and get the tuning slightly adrift of the ideal setting. You've turned the tuning dial a bit too far left or right of the ideal, if you follow me.
This fault is present on both AM and FM.
When I plug a separate radio into another input, the sound output through the unit is perfect.
I took the tuner out, dismantled the casing, cleaned everything with alcohol and put it back. No change.
It's a Mitsumi and seems long obsolete. Ebay and suchlike don't list anything.
9 V7424200 AM/FM TUNER FAE350-J10F J AM/FM チ ュ ー ナ 13
* 9 V7424300 AM/FM TUNER FAE350-A10F UCRTK AM/FM チ ュ ー ナ
* 9 V7424400 AM/FM TUNER FAE404-E10F ABGL AM/FM チ ュ ー ナ
I have the service manual on pdf but this forum says it's too large to post here.
I see the tuner has various "pots" inside with what looks like crosses on top that I could use a screwdriver to adjust, but i can't see any guidance on which does what and would quickly mess the settings up.
Any thoughts, please?
I have a Yamaha RX-V630RDS tuner amp, multi channel DSP.
The problem is confined to the tuner module.
I have negligible knowledge about electronics but can use test equipment and soldering kit.
The problem is that this unit self-tunes, but the sound is "off", like when you tune an ordinary radio and get the tuning slightly adrift of the ideal setting. You've turned the tuning dial a bit too far left or right of the ideal, if you follow me.
This fault is present on both AM and FM.
When I plug a separate radio into another input, the sound output through the unit is perfect.
I took the tuner out, dismantled the casing, cleaned everything with alcohol and put it back. No change.
It's a Mitsumi and seems long obsolete. Ebay and suchlike don't list anything.
9 V7424200 AM/FM TUNER FAE350-J10F J AM/FM チ ュ ー ナ 13
* 9 V7424300 AM/FM TUNER FAE350-A10F UCRTK AM/FM チ ュ ー ナ
* 9 V7424400 AM/FM TUNER FAE404-E10F ABGL AM/FM チ ュ ー ナ
I have the service manual on pdf but this forum says it's too large to post here.
I see the tuner has various "pots" inside with what looks like crosses on top that I could use a screwdriver to adjust, but i can't see any guidance on which does what and would quickly mess the settings up.
Any thoughts, please?