[ICOM] IC-706 MKII, heat.

[Gary Fiber]

I have owned an IC-706MKII for over 10 years and 
never saw the screen turn dark grey. I don't think my car gets as hot as yours.
I do live in Washington and it doesn't get quite 
as hot as other places except for the week of 100 
degree weather we had in first week of August. 
Rare for Seattle, I was done medium well ;)

I will say there is a limit to heat and 
electronics operation. Likely at some point its 
going to get to hot or to cold for the display to 
always function but I can't remember ever seeing 
one damaged for either. I have even seen my Fluke 
77 move pretty slowly on the cold weather.
I do know my polarized sunglasses make it hard to 
read the display on the 706MKII.

Yes the regulators are dropping 12 volts to 
something like 5 volts which generates heat with  the lost voltage.

Gary K8IZ

At 05:52 PM 9/3/2009, you wrote:
>: This radio does get hot/very warm. In my installation I have added a fan
>: which turns on automatically when the radio
>
>Aside from the thermally controlled fan already built in?
>
>The regulator portion of the front panels gets hot in this design.  Always
>has, always will, well noted, never noted to be a problem.  A bigger problem
>is the screen turning a dark grey, almost black and being difficult to read.
>I don't know at what point this happens, but my truck gets up to 184º in the
>sun, so somewhere below that.  No problems with the radio at this temp,
>however.
>
>Kurt
>
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Gary Fiber K8IZ
GROL PG-19-6691
Washington State Resident