Re: Actually On Topic Question

[ABLE1 <somebody@xxxxxxxxxxx>]

On 3/11/2023 1:36 PM, Bob La Londe wrote:
> On 3/11/2023 8:44 AM, RTS wrote:
>> On 3/10/2023 7:32 PM, ABLE1 wrote:
>>> Hello Guys!!!
>>>
>>> Hope everyone is doing well.  As for me, I am still beating the bushes.
>>>
>>> I have a customer that has a Vista 20p with a Tuxedo Touch Screen that
>>> as been working just fine since I installed it 11 years ago and it is
>>> now constantly rebooting.  I have not been on site as of yet but, the
>>> customer has done some troubleshooting and said that the voltage
>>> is holding steady at 13.2vdc while the touch screen reboots.
>>>
>>> I briefly talked to Tech Support and asked if this was a known issue.
>>> I was told that it was not, but should check for a loose connection
>>> and check the voltage.
>>>
>>> Again, I have not been on site, but will be next week.  I thought I
>>> would reach out here to see if there should be other things that
>>> should be looked at before declaring the Touch Screen was scrap.
>>>
>>> The docs say that the unit draws 270ma.
>>> Presently I am not sure what power source it is connected.
>>> I am thinking it would be the Aux + & -
>>>
>>> I would think if the Aux Power was the issue the voltage would not
>>> be holding steady at 13.2vdc.
>>>
>>> Anyone have any thoughts as to a solution or knowledge on this issue??
>>>
>>> Thanks,
>>>
>>> Les
>> this may sound crazy,  but  look for "Cricket bits"
>>
>> this time of year,  we use to have nutty behavior with remote
>> processing unit, (keypads, expanders, remote relays)
>>
>> each time we found Crickets had eaten the insulation off the wires and
>> moisture was causing high resistance shorts on the circuits..
>>
>> Never full time, mostly when the air moisture reach a point when
>> droplets formed..
>>
>> RTS
>
> Lizards can be an issue.  One time we lost a 24(+data) Channel
> T-carrier.  We started pulling cards and found a lizard electrocuted and
> stuck across the encoder card.  A new encoder card and 24 customers were
> back in service.
>
> One of the things I used to see modestly often that causes high
> resistance problems is wire that seems to have compressed over time. The
> screws were snug when it was installed, but they seemed to have loosened
> up.  I think the wire just relaxed under the screw terminal plate over
> time.  I once fixed a very expensive environmental monitoring
> (temperature, ammonia, air flow etc) multi room multi building cooling
> plant by snugging down all the screws in the various controllers, and
> resetting the programming to the documented defaults.  The plant manager
> was annoyed when I told him that was all I did.  He still paid the bill,
> and he was still asking me to do more work as I was getting out of the
> business.
>
>

Bob,

Lizard I doubt!?!?!  Black Snake maybe......  This is Pennsylvania!!

As for loose connection that is one of the things on my "TODO" list.

Thanks,

Les