mblam

Hey Bryan,

I too would appreciate a copy in the ol' email. My wife's lcd panel and radio went out. Any suggestions? And yes, you are doing quite a service here!

Thanks,

mblam7@yahoo.com

I have a copy of page 1366 of the RX300 repair manual which shows a schematic of the control panel with pin numbers. E I emailed you the entire manual, 34 megs of the pdf....

Sorry I didn't get back you sooner...was away. I'd love to get a peek at the schematic!

mblam7@yahoo.com

I would be tempted to have the dash apart and wiggle wires to see if it would come on. Also maybe the wires going over to the right side toward the cd changer. Something has to be loose.....

My thoughts exactly, but...no joy!

I've personally been driving all week in my wife's car (she's out in the NW right now) with the dash completely open and glove box removed with me giggling wires, slamming doors and generally making an a@s of myself while on the road.

I had hoped to have it fixed for her return...not so much, I'm afraid!

If you think of anything..and I do mean anything, just drop me a line.

Thanks,

Marc :cries:

I just re read the post of what your wife said, sounds like a low voltage to the radio. When you click the door locks maybe the voltage is taking a dip. Check the voltage again at the radio. and then start checking grounds or bad connections at the fuses./

Do you think that would keep it from coming up at all though. Most of the time it's out completely.

Yhanks,

Marc

The schematic ihave doesnt give pin numbers. The 7.5 amp fuse goes to a Junction Block Number 3 and splits to a gray wire to the radioplayer and the cd changer. the 10amp dome fuse goes to a red wire to junction block number 3 then splits to a white/blue and a red/white wire . Maybe a door lock wire is shorting to a speaker wire in the door, causing the amp to shut down. Sorry the schematics are just plain poor...

Hey, no apology necessary. I just appreciate any help.

Thanks.

Marc

There are two fuses, Radio number 2 fuse (7.5 amp) which is hot all of the time gray/red wire, and Fuse number 1 (25 amp) blue/yellow wire which in turned on by the ACC or run switch. both located in engine junction box. Also the Dome fuse provides power (10amp)red/white wire which is also hot all of the time. this is from a Haynes manual.

Mucho Gracias..I checked all the fuses...they were all good. At the connectors I did find a gray/red that went to both units, but no blue/yellow or red/white.

Do you happen to know what pins are supposed to be hot at any of the three connectors at the radio or the one going to the LCD and one at the panel?

One last crazy point....my wife is on a trip in Oregon and when she called she added that when the once in a million times that the radio and LCD come up (they both trigger at the very same time), they will ALWAYS shut off for good again if she hits the door lock button!

Any thoughts?

Thanks

Adding to this, look down on the CD player, It also has direct lines to the Display. Speaking of which the area under the Glove box area and the right passenger area there is a ECU with plugs and lots of wiring. Look there and see if anything looks unplugged. Removing the glove box makes is real easy for access.

Lonore,

I hear your good at this. I would apreciate your opinion.

My wife has a 1999 Rx300. The LCD display started blinking out, but she said a good smack on the dash would bring it back. By the time I got to look at it, it was very intermittent. It took the radio with it(and the power antenna), but the hvac stayed on and controllable, but no display. The back lights for all the controls under the LCD also stay on.

It is now "off" permantly.

I have the console dismantled and have checked the connections. They look good. I suspect the most likely culprit is the ribbon cable and/or the pc board control infront of the radio.

What ever powers the LCD also powers the radio. The cd player will power up but won't play because the radio isn't powered. I found one pin on the back of the radio connector that has 12 volts. I've found two pins on the connector going to the LCD/"radio station" button with 12 volts.

I haven't found where radioand LCD get their common power from.

Any help, Please!

Marc

Anyone need thease hard to get wiring diagrams just let me know and i will email the 1 u need...

Thanks,Bryan

Yes, I'd love a copy. I've got a bad LCD/Radio power problem!

Marc

mblam7@yaoo.com