No power

[Mannfried]

I have a celestron nexstar se8  with the stock base I have operated using batteries and suddenly it no longer will turn on.  Any suggestions about what may have happened and what the repair might entail? 

[Cornelius Varley]

Unless it is something simple such as a broken wire or corroded terminal stopping power reaching the electronics it will difficult to determine the cause.

[Cosmic Geoff]

You could try obtaining a suitable external regulated +12v power supply with centre positive and plug it in and see what happens.  Few people continue to use these mounts with internal batteries.

One possibility is that the handset has developed a bad connection where it plugs in so you can't see it light up.

[bosun21]

You should try plugging in a 12v DC power supply (centre pin positive). If it still doesn’t work then it could be a myriad of things causing the failure. This will require a more thorough investigation. If it does work then it’s either the contacts in the battery compartment have lost tension, or have become oxidized. Retention the contacts and check the wires are connected ok. Good luck 👍