When I press the on button the red light fades and shuts down completely. sometimes it can be turned on but it won't stay that way much longer and it starts flipping the drive channel and the more drive channel. don't know what the problem is. help please! thanks!

To perform a factory reset on the Zoom R16 recorder, follow these steps:

1. Power off the Zoom R16 by pressing and holding the [STOP] button.
2. While holding down the [STOP] button, press and hold the [REWIND] button and the [PLAY] button.
3. Continue holding all three buttons for about 5 seconds until the display shows "Factory Reset."
4. Release all three buttons and the unit will automatically restart and restore all factory settings.

Note: Performing a factory reset will erase all user data and settings, so be sure to back up any important data before proceeding.

Paul, inside of the Clavinpva at the rear where the power cable connects to the board. there is a 124 volt 1.25 amp fuse. the old type that is a glass cylinder with silver ends. it's an easy fix and will cost about $3.00 for a pack of four. You have to9 take out all of the screws on the bottom of the piano in order for the top to slide off, but you can do it in about 15 minutes!

Sounds like you have a problem in the amplifier section. Could be a bad capacitor or a floating ground. As a charge builds it will create the hiss and when it discharges, it surges through the amp causing it to shut down. You'll probably want to send them in for service.

Weak batteries or power adapter would cause this.

Reading the instruction manual, the red LED is used for more than one thing. I suspect the unit may be either not synced with the reciever frequency chosen or in one of the mute modes. I would re-read the setup mode for this unit as the SK 100G3 is a bit more complex than many for setup.
If the light won't go off when you open the battery cover and press the button to turn it off following the procedure, then there is a problem. I would go through the COMPLETE initial setup of the unit from scratch. Schematics are non-existent for most of this and would not do you much good anyway as the circuit boards will all be surface mounted with some parts the size of a grain of salt. Also a lot of the RF will be under soldered on shield covers. Repair of these would be a factory job if they even do it. If you have ever opened a cell phone, that will be comparable.

i guess the switch is broken - if you are not experienced fixing those problems better bring it to a shop and tell them about the problem - i guess they will be able to fix it easily

There can be any number of reasons for this problem - solve it diagnostically by starting with something that you know is working and work through systematically to the other end.

1. Test a microphone on a separate amp to make sure it works okay. Check amp and speakers working. Check that all output cables from mixer to amp are working by testing separately.
2. Plug microphone into a channel on mixer. Also plug in headphones and turn headphone volume control up.
3. Make sure input sensitivity knob is turned up a bit (say half way) and main output faders (yellow) are up.
4. Check that channel is turned on (little button just above the channel fader- needs to be pressed down)
5. press pfl (pre-fade listen) button (next to button to switch channel on)- do you get any sound on main output or headphones or any indicator lights on mixer to show signal is getting that far (eitehr the individual channel metering lights or the main ones in the central section)?
6. turn off pfl - make sure channel fader (slider) is up - normal position is ) - about 3/4 of way up. Check lights again on individual channel and main output section - any signs?
7. Is the sub mix button for the channel pressed down - in which case you will need to bring sub mix (red) output faders up as well as main faders.
8. If you have got signs of signal on the individual channel but not main see if the channel has been routed somewhere odd (like a subgroup of channels).
9. Plug a working amp and speakers into one of the auxiliary outputs and use the relevant auxiliary send knob (on each channel just above the faders and pfl switches) to pan some signal to that auxiliary out - do you get anything? There is also a headphone socket for listening to the auxiliary channels (with a selector switch /knob to determine which one - make sure it is in the right position) try listening to the auxiliary output with headphones - anything? If yes the problem lies in the main output section.
10. Check that there is not a jack plug in the insert socket (to route signal through an external effects unit) without a matching return jack being plugged in - if appropriate is relevant effects unit switched on and correctly set up - if unsure remove the insert plug to take it out of the system.
11. Make sure any mute buttons are not switched in on main outputs.

You can download a full user manual here http://www.allen-heath.com/gl/gl2400

The battery only comes on when the battery needs changing. It blinks momentarily when you press the tuner button and slightly longer when you press and hold the tuner button to turn it off.

you must do master reset!

1) Turn on the power.

TIP: All buttons must remain depressed and be pressed in the order mentioned in step #2 for proper execution.

2) Press and hold down the [SEQ] button, then the [CARD] button (located next to the Demo button), and then the [DEMO] button.

3) Continue to hold the buttons down until the dialog box appears in the display. The display will first indicate the V50 Test Program and Main Rom Version then will automatically display the question: 'Test Entry Manual?'

4) Press the [DEMO] button. The screen will display: 'Factory Set?'

5) Press the [+1/YES] button. 'OK' will appear beneath the 'Factory Set?' readout, indicating completion of the Factory Reset, and the V50 will automatically return to Play Mode.

Hello. The codes you seek are these: SYMPHONIC..... 520 904 906
AND here are the instructions:
Direct Philips Magnavox Universal Remote Code Entry PM335
1. Press and hold the Code Search button until the red
indicator stays on. Release the Code Search button.
2. Press and release the desired mode button (TV,
DVD, etc.).
The red indicator blinks, then stays lit.
3. Enter the 3 digit code from the code tables. Note:
after a valid code entry, the red indicator turns off.
For an invalid code, the red indicator flashes.
4. With your device on, press CHANNEL Up. If the
device responds, no further programming is
required. Note: If some buttons do not operate your
equipment, try one of the other codes for your
brand.