Can anyone help please. A newly installed galaxy 48 with 2 keypads each cabled in belden from panel approx 70m each. 680ohm resistor across each and link 3 removed from panel. When panel is powered up the keypads either come on with all stars or nothing and the green light flashes but they dont respond to any key presses. If I disconnect one keypad from panel the other works fine and vise versa but the 2 wont work together. Any sugestions anyone.

i assume you have addressed them?

If so 70m what power is at the keypad?

i assume you have addressed them?

If so 70m what power is at the keypad?

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Addressed 0 and 1 power 13.27 and 13.35

they definetly 680Ohm resistors?

id pull them and see

power is spot on. Did you power cycle the keypads after readressing?

ALso if you fit 1 keypad at location and 1 at the panel any problem?

cable defiently ok, ie no shorts to screen?

they definetly 680Ohm resistors?

id pull them and see

power is spot on. Did you power cycle the keypads after readressing?

ALso if you fit 1 keypad at location and 1 at the panel any problem?

cable defiently ok, ie no shorts to screen?

Definetly 680 ohm

Both cables metered out ok

Tried one keypad at panel and 1 in position and both work ok (also tried other position and is ok)

You only earthed the screen at the panel?

You only earthed the screen at the panel?

yes

whats the comms strength when 1 keypad is fitted at location/.

whats the comms strength when 1 keypad is fitted at location/.

How do i tell comms strength?

Personally ( after you have answered James) I would flylead both RKP`s at the panel to make sure all is well.

Had similar before on a G3-520 with 12 RKP Ethernet dual SAB and 7 internal sounders.

Turned out the PCB`s were at fault.

In diagnostics

61:1:2

PS, the panel will work without the resistors in the keypad.

Again i`d double check if your unsure.