Volume using remotes either ramps to max or all the way down

DESCRIPTION The dual radiator fans are mounted to the back side of the radiator . The radiator fan consist of the fan blade, electric motor and a support shroud which are all serviced as an assembly.
OPERATION COOLANT TEMPERATURE
A/C PRESSURE TRANSAXLE OIL TEMPERATURE Fan Operation Speeds: Initial Max Initial Max Initial Max Fan On: 104°C (220°F) 110°C (230°F) Fan Speed Duty-Cycles (Ramps-up) from 30% to 99% 1,724 Kpa (250 psi) 2,068 Kpa (300 psi) Fan Speed Duty-Cycles (Ramps-up) from 30% to 99% 96°C (204°F) 111°C (232°F) Fan Speed Duty Cycles (Ramps-up) from 30% to 99% Fan Off: 101°C (214°F) Fan Speed Duty-Cycles (Ramps-down) from 99% to 30% 1,710 Kpa (248 psi) Fan Speed Duty-Cycles (Ramps-down) from 99% to 30% 89°C (192°F) Fan Speed Duty Cycles (Ramps-down) from 99% to 30%

ramp too steep and not made to a safety standard
person too high in chair
person too far forward in chair
front wheels not positioned far enough forward
carer not paying attention to the ramp and possible risks
talk with disability persons equipment retailers as they have a good idea of the risks involved with wheel chairs and can advise you on how to overcome the problem

You have an issue with the handlebar switch, or the harness between the switch and the radio

Please visit:www.alldatasheet.com its free Colin.

Ther are settable ramp up and ramp down times and there are settable speeds (max and run)

Sounds like the circuit board for the button keys in front has a shorted tactile switch causing sound to keep increasing, Replace all switches on this board or get new board. I believe it is called a HS board or very close to that.

Question:
Take the batteries out of both the remotes and then try to turn the TV on with it's On/off switch built into the TV.
If it turns on and the volume stays the same, then it must be an issue with one of the remotes.
If the tv turns on and the volume ramps up to max. Please check if volume knobs/buttons on the tv itself to see if they are sticking.
If they aren't, there is something wrong with one of the boards in the tv of course. This sure should be something a Sony Service Shop can fix. I don't think it will be expensive. Maybe a $100 to $200 repair if they do the work.
Blessings,
A/V Media Guy

The most likely cuase is bad connection at the board and or motor. Just pull them off and reconnect them and wiggle em.

This should still be under warranty. It sounds like the internal CPU is confused. This could be a simple power suplpy problem or something a bit more complex. Return it for warranty service.
Keep us posted.

Dan