LOOKING FOR A PIONEER GEX-FM903XM system, but can't find one, or even a price on one, can you help

How much is the monthly service?

Have you tried changing the backlight controls in the menu? Pull up your menu, go to settings, then preference, and change display. Choose backlight display. You can put it always off, always on, or on for however many seconds.

The battery is definately the problem. I have seen many times in this device in particular - the battery shorts to ground - and causes the unit to malfunction.
VERY COMMON and recurring problem in the GEX-MP3

CLICK HERE to read more.

Replacing the battery is as easy as finding an Authorized Pioneer Repair center near you.
Pioneer does not sell parts to unauthorized repair techs.

CLICK HERE to find the nearest one to you. (top right of page)

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pink / red or yellow these are all power wires.

The same thing happened to my XMP3, I had to send it to Pioneer for a replacement XMP3........call Pioneer @ (800) 421-1404, Monday through Friday, between the hours of 7:00 a.m.
and 4:30 p.m. Pacific time.

The unit must be reset under the following conditions:
When using this product for the first time after installation.
When this product fails to operate properly.
When strange (incorrect) messages appear on the display.
• To reset the microprocessor, press the RESET button on the unit with a pen
tip or other pointed instrument.

having the very same problem and my unit is only a couple months old . has been nothing but problems but at least it would turn on then , nothing now. I removed it from base and attempted to trn it on ..... nothing but PLEASE WAIT . I:M SO SO SO mad

It may be possible that the FM frequency chosen during setup, is in use in your area by a strong signal from a local station. Change to another frequency and see if the situation improves.


The following is from the Operation's Manual:


FM Modulator Setting
You can adjust FM Modulator frequency and output level.
7 Frequency
If output from the FM Modulator is hard to hear due to interference from a strong broadcast
station transmission, you can switch to another frequency.
You can adjust frequency between 87.9 and 90.1MHz.
7 Level
If the output sound is too quiet, too loud or distorted, you can adjust FM Modulator output
level.
You can adjust level between “LEVEL–1” and “LEVEL–7”.
1. Press the POWER button for 2 seconds to enter the FM Modulator Setting
mode.


2. Select the desired frequency
with the left/right arrow buttons.


3. Increase or decrease the Level
with the up/down arrows (buttons).




4. To cancel the FM Modulator Setting mode, press the POWER button again
for 2 seconds.
Note:
• After entering the FM Modulator Setting mode, if you do not perform an operation within about 8 seconds, the FM Modulator Setting is automatically canceled.

Yellow
To terminal always supplied with power
regardless of ignition switch position.

Red
To electric terminal controlled by ignition
switch (12 V DC) ON/OFF

Black (ground)
To vehicle (metal) body.

Buss cable is plugged into the wrong connector on the GEX-P920XM. The installation manual is not clearly written, the figure in the manual is correct.