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AM/FM And CD player works fine but no display


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Guest
Anonymous Poster
pgk7759@yahoo.com

Feb 24, 2009, 10:42 PM

Post #1 of 5 (3447 views)
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post icon AM/FM And CD player works fine but no display Sign In

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?


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Anonymous Poster

Aug 5, 2009, 8:52 PM

Post #2 of 5 (3305 views)
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Re: AM/FM And CD player works fine but no display [In reply to] Sign In

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


Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Aug 6, 2009, 3:43 PM

Post #3 of 5 (3302 views)
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Re: AM/FM And CD player works fine but no display [In reply to] Sign In

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


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 6, 2009, 4:02 PM

Post #4 of 5 (3300 views)
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Re: AM/FM And CD player works fine but no display [In reply to] Sign In

caradiodoc

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




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



kenray
User

Mar 18, 2010, 6:09 PM

Post #5 of 5 (1460 views)
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Re: AM/FM And CD player works fine but no display [In reply to] Sign In

chances are you may have a bad transistor or voltage regulator that supplies voltage to the display.




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