[Alinco] Thermal problem DR-635

[Roger (K8RI)]

On 10/9/2012 5:42 PM, Ray wrote:
> I have a DR-635 installed in my car.  It has worked fine during the warm
> weather but now that it is turning cool in the mornings at 50 degrees or
> less, the receiver stops working and a loud white noise comes thru the
> speaker.  The volume control has no affect on the level of the noise.
>
> The transmitter still seems to work as it will key up a repeater and the
> S meter will display it, but no repeater audio comes thru.  I suspect
> the problem is in the audio amplifier section.
>
> If left on with the car heater warming it up for about 10 to 15 minutes,
> it will return to normal operation.
>
> Has anyone any experience with a like problem, which might be helpful in
> resolving it?

As a SWAG and not having actually had a chance to test any parts, by 
guess would be either a ribbon cable end, or their chincey sub panel on 
the front panel.  It sounds like a poor connection which could be cold 
solder, or ribbon cable.

73 and good luck,

Roger (K8RI)


>
> Your attention is appreciated.
> Ray, W4BYG
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