Re: Battery

"Dave Hartman [email protected] [YaesuVR-5000]" <[email protected]> Sun, 12 Feb 2017 20:12:08 -0500
Newsgroups gmane.recreation.radio.hardware.yaesu.vr-5000
Message-ID <[email protected]>
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I hope it's not beyond repair! You might want to read this thread (if 
YoHaa does not muck it up as usual):
http://chemistry.stackexchange.com/questions/54978/effects-of-potassium-hydroxide-carbonate-on-metals
Maybe you can find parted out boards to replace the one(s) that got 
damaged.

In any event, DO NOT BOTHER REPLACING IT. Just remove it and leave it 
out. I've spent quite a bit of time(too much) analyzing the circuit, and 
there's no way it would provide any hold up for more than a few minutes. 
In a power outage, or in storage much longer than that, it will not do 
what it was intended to do anyway, which is ONLY to keep the time clock 
going. Later serial numbers do not even have one, so you have to reset 
the time whenever power goes out anyway. I do not know at what point 
they gave up on the idea. I will be posting a more thorough explanation 
about this eventually.

Meanwhile, I also remember seeing somewhere a resistor change mod to 
improve the dimming of the back-light from landing light to night light. 
Could someone remind me where I saw it please?
Dave - AC2GL

On 2017-02-09 16:15, Roger [email protected] [YaesuVR-5000] wrote:
>
> thats right ..
>
> glued with some foamed tape to the board, and imagine whats happen 
> when the battery starts releasing electrolyte ....
>
> i still try to recover an vr5000 because of that.
>

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      <p>I hope it&#39;s not beyond repair! You might want to read this thread (if <br>
YoHaa does not muck it up as usual):<br>
http://chemistry.stackexchange.com/questions/54978/effects-of-potassium-hydroxide-carbonate-on-metals<br>
Maybe you can find parted out boards to replace the one(s) that got <br>
damaged.<br>
<br>
In any event, DO NOT BOTHER REPLACING IT. Just remove it and leave it <br>
out. I&#39;ve spent quite a bit of time(too much) analyzing the circuit, and <br>
there&#39;s no way it would provide any hold up for more than a few minutes. <br>
In a power outage, or in storage much longer than that, it will not do <br>
what it was intended to do anyway, which is ONLY to keep the time clock <br>
going. Later serial numbers do not even have one, so you have to reset <br>
the time whenever power goes out anyway. I do not know at what point <br>
they gave up on the idea. I will be posting a more thorough explanation <br>
about this eventually.<br>
<br>
Meanwhile, I also remember seeing somewhere a resistor change mod to <br>
improve the dimming of the back-light from landing light to night light. <br>
Could someone remind me where I saw it please?<br>
Dave - AC2GL<br>
<br>
On 2017-02-09 16:15, Roger [email protected] [YaesuVR-5000] wrote:<br>
&gt;<br>
&gt; thats right ..<br>
&gt;<br>
&gt; glued with some foamed tape to the board, and imagine whats happen <br>
&gt; when the battery starts releasing electrolyte ....<br>
&gt;<br>
&gt; i still try to recover an vr5000 because of that.<br>
&gt;<br>
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