servo's not responding to radio

[brians63]

hi all,
i have the 1/12 scale Formula. i was going to run it today, so i went to change out the batts in boat an radio.

after changing batts, i turned on the boat to make sure all connections where good an the servo's were glitching every once in awhile.

now here is where i am stumped, i turned on the radio to check for battery strength there an noticed if i turned the wheel left/right i had no response from the servo's....same if i applied throttle/brake...

pulled out the servo tray after a little struggle an no wetness or anything so i am completely at a loss here as to what to do..

hope somebody can help, Brian.

[Cossack71]

Have you tried reseating the crystals?

[mjmsprt40]

Check all the connections while you're at it. Oxidation can and will hit any plug, unplugging and re-connecting helps to cure that.

edit:add-on. I note that the servos were glitching. That could be bad connections too, and in any case it strikes me that it was a blessing to have a total shut-down when you did. The last thing you want to do is to operate a fast boat with glitching, problematic servos. Find out why they were glitching, and I'll bet that the one problem and the other problem are both the same.

[brians63]

Cossack71: yes, i did.....

mjmsprt40: yes, i checked all connections an they were good.

will recheck everything in the morning, an let you guys know....

once i get this figured out, can i place the servo box, in a zip loc baggie before putting it back in boat??

do i have to screw it back down, or can i leave it unscrewed as there doesnt seem to be much room to move itself around?

[Cossack71]

You may want to check the antenna also for cracks or breaks.
And if you have a spare set of cyrstals, swap them out to try.
I've had crystals go bad without warning.

Check your battery voltage too.

It is better to screw it down, however, if it is that tight, you might be able to pack high density foam around it to take up any chance of it bouncing around.

[Ron Olson]

Try bypassing the power switch by hooking the battery pack up directly to the receiver. Switches can do some weird things.
Moisture can be coming in from around the linkage seals in those boats so put a little grease inside the seals then zip-tie them shut making sure to check that you aren't stretching them too far.

[brians63]

alright, so now there working fine:confused: i took the battery holder, an wrapped that up,then put it inside a plastic baggie. did the same with reciever box before putting them both back in the boat....

now i am thinking of getting a hump pack for the batts. then putting a notch, on the end of the plastic cover,running the cords out through that an sealing it completely.

but what to use that will make a good seal for water but still let me get in there if need be??:huh:

[Cossack71]

Here's something to try.
Rather then a notch, make a small round hole. Half and half where it joins.
Run your wires through a rubber grommet, and seat it in the hole.
Then, take a little vaseline, and spread it over to seal.
The petroleum gel will repel water, simple to replace, and you will still be able to work on it.

[brians63]

very good idea....will deffinetily give that a go an see how it works...ty:wave:

[CFRACR]

Keeping the radio box dry is important, but keeping the receiver completly dry is more important! I don't think using ziplocs are the best protection. I protect my recievers to the extint that they can be completely sumerged and still not get a drop.