[Kenwood] TM-V7A Power On Problem

[Clif Holland]

When the reset line voltage varies from 0 to 5 there is no telling what 
it will do. There are 2 internal surface mount fuses.

Clif Holland KA5IPF

On 9/22/2019 9:12 PM, John via Kenwood wrote:
> Thanks for the tip. !?? I will investigate further in a few weeks,
>
> Do you think this also applies to Rick's intermittent power issue as 
> well?
>
> John
>
> N7JL
>
>
> On 9/22/19 3:54 PM, Clif Holland wrote:
>> Clif's Notes:
>>
>> Check internal fuses
>> Pin 60 of uPc should be 5 v if low then;
>> In Control unit C523 leaked and damaged Reset line under it.
>>
>> Clif Holland KA5IPF
>>
>> On 9/22/2019 5:20 PM, John via Kenwood wrote:
>>> Mine just recently decided to not turn on at all .?? I checked what 
>>> fuses I could find, so I will be "listening in" to see what 
>>> suggestions are offered up here.
>>>
>>>
>>> John
>>>
>>> N7JL
>>>
>>>
>>> On 9/22/19 8:48 AM, Rick Markey, KN3C wrote:
>>>> Over the years, I have amassed three "blue eyed monsters" aka the 
>>>> Kenwood TM-V7A.?? Two have lines in the display, but one is still 
>>>> perfect! I was housecleaning and decided to power them up and 
>>>> reprogram them using the RT Systems software.
>>>>
>>>> One of the three radios will only power on intermittently.?? When 
>>>> you can get it to power on, you can then power it off, on, off, on, 
>>>> seemingly forever.?? If you leave it turned on, it will eventually 
>>>> turn itself off.?? It's not the control head, I've swapped them 
>>>> around.?? I've done factory resets on it and that has no effect, 
>>>> although the reset does work if you catch the radio in the right mood.
>>>>
>>>> I have not opened up the radio for a look around.?? Just curious if 
>>>> anyone else has seen this and has a suggestion?
>>>>
>>>> Thanks,
>>>> Rick, KN3C
>>>>
>>>>
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>>
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