Problem With Old JVC Receiver

[Tiziano]

Not sure if this is the appropriate NG, but here it goes...

I have this old JVC digital surround system receiver (mod. RX-703VBK)
that is more than 15 years old.
I have to repeatedly turn the receiver on and off before the audio part
comes on. Sometimes, I also have to switch to a different radio channel
for the audio to come on.

Being that I am not technically inclined, is there anybody that knows
what the problem is, how to fix it, and if I need to get a repair
technician involved?

If a technician is recommended, do you know of a reputable one in the
North Dallas/Plano/Richardson/Addison (Texas) area?

Thanks.

 

[N Cook]

Not sure if this is the appropriate NG, but here it goes...

I have this old JVC digital surround system receiver (mod. RX-703VBK)
that is more than 15 years old.
I have to repeatedly turn the receiver on and off before the audio part
comes on. Sometimes, I also have to switch to a different radio channel
for the audio to come on.

Being that I am not technically inclined, is there anybody that knows
what the problem is, how to fix it, and if I need to get a repair
technician involved?

If a technician is recommended, do you know of a reputable one in the
North Dallas/Plano/Richardson/Addison (Texas) area?

Thanks.

Probably a capacitor problem in the protection circuitry.

 

[Mark D. Zacharias]

Probably a capacitor problem in the protection circuitry.

Boy, that was a leap...

May be just the discriminator and / or VCO have drifted so far off that
theFM rarely un-mutes. The OP didn't say if he was using any other sources.

To the OP:
It's a bad idea to repeatedly turn on the unit to try to get it to work.
Even if you succeed, you have stressed various parts in the receiver, and
risk additional more expensive failures.

Mark Z.

 

[N Cook]

Boy, that was a leap...

May be just the discriminator and / or VCO have drifted so far off that
theFM rarely un-mutes. The OP didn't say if he was using any other sources.

To the OP:
It's a bad idea to repeatedly turn on the unit to try to get it to work.
Even if you succeed, you have stressed various parts in the receiver, and
risk additional more expensive failures.

Mark Z.

I interpreted no audio as absolutely no audio rather than amp hiss but no
signal, fiddling with the radio was just incidental.
I just happened to be dealing with a tuner amp with a similar problem of no
audio.
In that case a small cap in the pa in the circuit that feeds back to the
protection part was holding a DC charge like a battery that took hours to
decay but was enough to upset the local biasing.

 

[Tiziano]

Thanks for the tips, N. Cook and Mark D. Zacharias.
Yes, when I say that there is no audio, there really is no audio at all...
Hopefully somebody can recommend a repair shop in the North
Dallas/Plano/Richardson/Addison area.