Got a problem with the following,
LRX-0240 - Receiver Packs - Li-Po, 240 mAh, 2S2P, 7.4V
LVR-1000-1A LDO Li-Po Racing Regulator (6.7V) for RX Li-Po

When I plug it all up the MRT MX Pro esc won't work. Set-up light flashes all the time. Have tried resetting esc to tranny but no joy. Not running a switch in receiver pack just plugged straight through the regulator. Remove receiver pack/regulator & all is OK with the ESC

Li-Po battery is fully charged, lights work OK on regulator, cells for car part charged to 3000mah

Spoke to MRT and they are unsure as to the problem

Have run esc with a switched ni-mh receiver pack & the esc is OK with that.
Also using Spektrum receiver

Anyone got any ideas?

update
charged Li-Po @ 8.26v
Reg out put is 6.79v

Tried a Spektrum SR3500 & SR3000
Servo is a Sanwa 141HR