The same thing happened to me. The unit was under warranty, so I called Pioneer and they gave me the address for their repair service in my area. Call Pioneer and they'll send you in the right direction.
It turned out to be a display system failure in my unit. It would have cost 120+ had I not been under warranty.
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Re: screen on pioneer DEH-P780MP not working
It could be an internal malfunction. It would be a power issue if there was no power going to anything. I would take it to an authorised pro in electronics. Even call him up and tell him whats wrong with it. He may be able to help you over the phone. This one is not a cut and dry DIY. Sorry.
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Six stations for each band can be stored. 1 Press LIST. Preset screen is displayed. 2 Use MULTI-CONTROL to
store the selected frequency in memory. Turn to change
the preset number. Press and hold to store. You can also store the
frequency in memory by pushing and holding MULTI-CONTROL right. 3 Use MULTI-CONTROL to
select the desired station. Turn to change the station.
Press to select. You can also change the station by
pushing MULTI-CONTROL up or down. To return to the ordinary display,
press BAND/ESC or LIST.
wellto set the clock you need to first hold the source button to turn it off to where the clock is just on. then press and hold the clock button until it beeps then use the arrows to set the clock..........
and to set the stations you need to tune in your fav station and then press and hold the number you want to place that station. you can also do best station memory if you are in an unfamiliar area or if you just want to fast tune all the local stations that come in the best it will randomly preset the stations by pressing and holding till it beeps on the program bottom. then the screen will run BSMuntil it finds and places the stations. hope this helps!
Upper right-hand corner, there's a button next to the "eject" button. Pressing this button while the unit is on will cycle between displaying the clock and the track number & play time (CD) or clock & radio station.
When the unit is off, you can press the same button to completely shut off the display, which is sometimes nice if you don't want the blue ring around the volume knob glaring in your face.
Pioneer have factory set your DEH-P690UB to 0.2Mhz steps to match the American FM frequency allocations.
The fix is not casual as it requires complete disassembly of the head unit and repositioning of two surface mount resistors.
This will void any warrantee and unless you're good at microscopic soldering could also ruin the set.
I did however void my 2 year warrantee yesterday partly out of frustration and because I have the right SMT tools at work.
Now my tuner CPU thinks it's in the Austrailian/Asian model DEH-P7950UB and is also compatible with UK stations.
A previously hidden menu is also available where I can set either 0.1 or 0.05Mhz stepping for FM and 9 or 10KHz for AM BSM scanning.
The rotary control now steps in 0.05's instead of odd 0.2's on FM
Hope this helps.
HI. search pioneer no sound on this board. i have already walked another guy through this...
if everythng works but no sound is outputted.. 99 times out of 100 the audio output ic "chip" is bad. Its a common failure for pioneer cd players as well as others. The part is about $20 if you know where to look... if you decide to repair this yourself you will need to be very skilled with solder and desoldering braid...
let me know