I have a 98 Nissan Altima GXE with Clariion AM/FM - CD player. I disassembled this unit hoping that it could only be a loose connection. The Right lower corner of the message center has a burnt spot but could not tell if that's the way it suppose to be. Can somebody help me how to fix it or if I can buy that display board somewhere else?

What's the problem with the radio?

The display is a vacuum tube, just like what was used in tvs and radios up through the 1960s. During manufacturing, the air is sucked out, the nipple is melted to seal it, then a white powder inside is flashed with a strobe light to explode it. This burns up any remaining air in the tube. There needs to be a good vacuum in it. The residue left behind from the burning powder is that "burned" spot that often looks like a mirror.

The only thing that goes bad with these display tubes is they can break or the nipple can break off if not handled carefully. When the vacuum is lost, that burned spot will turn back into the white powder.

caradiodoc

caradiodoc; Can I assume from your 'moniker' that you are a cardiologist? Don't give up the day job.
Loren
SW WA

caradiodoc

I'll ask you one more time to register and log in before giving advice.




78 Corvette Pace Car For Sale-18k mi orig-Florida