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Pete
Pete, Electronic Engineer
Category: Consumer Electronics
Satisfied Customers: 15769
Experience:  Over 16 years of experience installing and repairing electronics.
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Rod, i have an Uniden Solara that do not receive I checked

Customer Question

hi rod, i have an Uniden Solara that do not receive
I checked the discriminator, and see signals until the input to the demodulator
but don have audio output..any suggest? Thanks a lot for your help
Submitted: 8 months ago.
Category: Consumer Electronics
Expert:  Pete replied 8 months ago.

Hi Luis,

Customer: replied 8 months ago.
hi, Pete
Customer: replied 8 months ago.
Are you working on my question?
Customer: replied 8 months ago.
Sorry for been late, but i was out my computer today
Customer: replied 8 months ago.
Hi Pete, are you there? Why I can't see your answer?
Thanks
Expert:  Pete replied 8 months ago.

Yes, I am here ,thanks for replying back to me.

Expert:  Pete replied 8 months ago.

Check that the volume is turned up and the radio is not muted.

Check that the radio is not on the weather channel otherwise it will mute the speaker.

Try connecting an external speaker and let me know if you can hear any sound through it...

Customer: replied 8 months ago.
Nice to talk with you..
I already checked the speaker and it is fine.
The problem is on the demodulator.. Are you familiarized with that part of the circuit?
Expert:  Pete replied 8 months ago.

I am not familiar with the internal circuitry on this particular model.

Are you troubleshooting at component level?

Customer: replied 8 months ago.
I am inside the circuit
Customer: replied 8 months ago.
I am cheking it with instruments, like RF generator, osciloscope, etc
Expert:  Pete replied 8 months ago.

Are you getting any voltage to the speaker?

Customer: replied 8 months ago.
I have figured out, that the problem is on the discrimator...the signal go accross the 455 KHz filter
But it doesn't demodulate
Customer: replied 8 months ago.
I also replaced the chip of the deodulator
But the problem remains
Customer: replied 8 months ago.
Any suggestion?
Expert:  Pete replied 8 months ago.

It could be that one of the other components on the discriminator has failed... if you have schematics available you should be able to track it down.

Customer: replied 8 months ago.
the problem is just that there is no schematics for this radio...Is this why I requested help from the site
Customer: replied 8 months ago.
Do you know some body with experience with the circuitry of this radio?
Expert:  Pete replied 8 months ago.

I don't know anyone who works on these radios at component level;

in the absence of schematics I would use another radio as a guide for expected test readings.

Customer: replied 8 months ago.
I know, but i have just this unit failed and no possibility to reach other
Expert:  Pete replied 8 months ago.

Ok, I'll see if the other experts have any further ideas...

Customer: replied 8 months ago.
ok, thanks a lot for your support