RC 300 won't start the fireplace

[babo]

Gentlemen,
the original RC300 remote is failing to start the flame. The "big button" won't even light up the remote's screen. At the same time, the"menu" and other buttons work and communicate to the fireplace.
Batteries are new.
is there anything i can do to fix it?
Thank you

 

[DAKSY]

What unit do you have?

 

[babo]

What unit do you have?

Bob,
i have Heat and Glo 6000CIXIPIS.

 

[DAKSY]

You said the batteries are NEW. Have they been tested for full charge? Each battery should have more than 1.5vDC.
Are the batteries UNDER the unit fully charged, as well?

 

[babo]

Bob,
they are all 1.38... Replaced with 1.58, still a no-go. I can turn on the lights and pilot remotely. the burner is the only function that i can't operate using the remote.
> Are the batteries UNDER the unit fully charged, as well?
there are no batteries there. never was any....

 

[DAKSY]

Interesting. There is a battery pack shown in the schematic, that's why I asked...

 

[babo]

here is one of the pictures. I always wondered what is the purpose and why it is empty. but it worked, so ...
P.S. the url above leads to a really tiny picture. here is the link to the thread with the uploaded, normal size pictures - https://www.hearth.com/talk/threads/main-burner-wont-start-heat-and-glo-6000cixipis.175747/