As @ruggb suggests this requires testing the circuit as the audio outputs are supplied by a single audio amplifier IC.
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As @ruggb suggests this requires testing the circuit as the audio outputs are supplied by a single audio amplifier IC, which may be the problem
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It could also be a faulty master volume potentiometer VR551 that is the problem though.
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It could also be the master volume potentiometer VR551 that is the problem though.
Here’s the [link|https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
Go to p.8 to see the block diagram and find the ''Power amp IC551'' and next to it is the master volume control VR551. This is just to give context as to how the audio is supplied to the speakers. There is no detailed wiring schematic for the board, only a board layout so this will have to be worked out if wanting to test the volume control.
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what audio levels are expected.
You may have to contact a reputable, professional electronics repair service (perhaps specializing in electronic piano or keyboard may be best) and ask for a quote.
As @ruggb suggests this requires testing the circuit as the audio outputs are supplied by a single audio amplifier IC.
It could also be a faulty master volume potentiometer VR551 that is the problem though.
Here’s the [link|https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
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Go to p.8 so see the block diagram and find the Power amp IC551 and next to it is the master volume control VR551. This is just to give context as to how the audio is supplied to the speakers. There is no detailed wiring schematic for the board, only a board layout so this will have to be worked out if wanting to test the volume control.
+
Go to p.8 to see the block diagram and find the ''Power amp IC551'' and next to it is the master volume control VR551. This is just to give context as to how the audio is supplied to the speakers. There is no detailed wiring schematic for the board, only a board layout so this will have to be worked out if wanting to test the volume control.
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what audio levels are expected.
You may have to contact a reputable, professional electronics repair service (perhaps specializing in electronic piano or keyboard may be best) and ask for a quote.
As @ruggb suggests this requires serious troubleshooting as the volume is supplied by a single audio amplifier IC.
+
As @ruggb suggests this requires testing the circuit as the audio outputs are supplied by a single audio amplifier IC.
It could also be a faulty master volume potentiometer VR551 that is the problem though.
Here’s the [link|https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
Go to p.8 so see the block diagram and find the Power amp IC551 and next to it is the master volume control VR551. This is just to give context as to how the audio is supplied to the speakers. There is no detailed wiring schematic for the board, only a board layout so this will have to be worked out if wanting to test the volume control.
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what audio levels are expected.
You may have to contact a reputable, professional electronics repair service (perhaps specializing in electronic piano or keyboard may be best) and ask for a quote.
As @ruggb suggests this requires serious troubleshooting as the volume is supplied by a single audio amplifier IC.
It could also be a faulty master volume potentiometer VR551 that is the problem though.
Here’s the [link|https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
-
Go to p.8 so see the layout and find the Power amp IC551 and next to it is the master volume control. This is just to give context as to how the audio is supplied to the speakers. There is no schematic for the board so this will have to be worked out if wanting to test the volume control.
+
Go to p.8 so see the block diagram and find the Power amp IC551 and next to it is the master volume control VR551. This is just to give context as to how the audio is supplied to the speakers. There is no detailed wiring schematic for the board, only a board layout so this will have to be worked out if wanting to test the volume control.
-
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what levels are expected.
+
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what audio levels are expected.
You may have to contact a reputable, professional electronics repair service (perhaps specializing in electronic piano or keyboard may be best) and ask for a quote.
As @ruggb suggests this requires serious troubleshooting as the volume is supplied by a single audio amplifier IC.
It could also be a faulty master volume potentiometer VR551 that is the problem though.
Here’s the [link|https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
-
Go to p.8 so see the layout and find the Power amp IC551 and next to it is the master volume control. This is just to give context as to how the audio is supplied to the speakers. There is no schematics for the board so this will have to be worked out if wanting to test the volume control.
+
Go to p.8 so see the layout and find the Power amp IC551 and next to it is the master volume control. This is just to give context as to how the audio is supplied to the speakers. There is no schematic for the board so this will have to be worked out if wanting to test the volume control.
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what levels are expected.
You may have to contact a reputable, professional electronics repair service (perhaps specializing in electronic piano or keyboard may be best) and ask for a quote.
As @ruggb suggests this requires serious troubleshooting as the volume is supplied by a single audio amplifier IC and is software controlled.
+
As @ruggb suggests this requires serious troubleshooting as the volume is supplied by a single audio amplifier IC.
It could also be a faulty master volume potentiometer VR551 that is the problem though.
-
Here’s the [https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
+
Here’s the [link|https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
Go to p.8 so see the layout and find the Power amp IC551 and next to it is the master volume control. This is just to give context as to how the audio is supplied to the speakers. There is no schematics for the board so this will have to be worked out if wanting to test the volume control.
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what levels are expected.
You may have to contact a reputable, professional electronics repair service (perhaps specializing in electronic piano or keyboard may be best) and ask for a quote.
As @ruggb suggests this requires serious troubleshooting as the volume is supplied by a single audio amplifier IC and is software controlled.
It could also be a faulty master volume potentiometer VR551 that is the problem though.
-
Here’s the https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
+
Here’s the [https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
Go to p.8 so see the layout and find the Power amp IC551 and next to it is the master volume control. This is just to give context as to how the audio is supplied to the speakers. There is no schematics for the board so this will have to be worked out if wanting to test the volume control.
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what levels are expected.
You may have to contact a reputable, professional electronics repair service (perhaps specializing in electronic piano or keyboard may be best) and ask for a quote.
Hi,
As @ruggb suggests this requires serious troubleshooting as the volume is supplied by a single audio amplifier IC and is software controlled.
It could also be a faulty master volume potentiometer VR551 that is the problem though.
Here’s the https://www.manualslib.com/manual/1498020/Yamaha-Dgx-220.html#manual|service manual] for the keyboard.
Go to p.8 so see the layout and find the Power amp IC551 and next to it is the master volume control. This is just to give context as to how the audio is supplied to the speakers. There is no schematics for the board so this will have to be worked out if wanting to test the volume control.
On p.29 and p.30 Test #13 it shows what equipment is needed to test the volume and what levels are expected.
You may have to contact a reputable, professional electronics repair service (perhaps specializing in electronic piano or keyboard may be best) and ask for a quote.