Tecom V8 Mains fail won't go away

**phill_45** · 13-05-10, 07:50 PM

I cant seem to get rid of mains fail message on challenger panel.
Checked ac under load all ok.
Removed battery. AC holding up 18vac.
System alarms set to not latched.
Any ideas or just replace panel?

**tech09** · 13-05-10, 11:38 PM

are you getting fuse fails?

**downunderdan** · 14-05-10, 05:22 PM

Have you acknowledged the message?

**DIYfan** · 14-05-10, 08:21 PM

Get the board repaired or replaced. Permanent false alarms such as siren fail, fuse fail, tamper etc can occur when one or more of the multiplexer ICs on the board fails.

**Tastech** · 15-05-10, 04:17 AM

did you attend site re mains fail or did this occur after you serviced it dont you have to plug battery in to a tecom then ac pwr on power up ?

**tech09** · 15-05-10, 08:23 PM

Originally Posted by Tastech

did you attend site re mains fail or did this occur after you serviced it dont you have to plug battery in to a tecom then ac pwr on power up ?

dont know about that sequence tastech? ive never been told to do that.

but yeah you should replace the board!

**phill_45** · 18-05-10, 08:16 AM

Thanks for all your replies.
Replaced pcb apparently the Zener diode failed.Not sure how its related but there you go
customer happy.

**illhauntya2** · 24-05-10, 06:54 PM

what did they charge for the new board or is it a re worked board. zener diode gees they are only a few cents.. im interested as i might need a new board myself... my time is allways wrong

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