Spectrum Reciever or Transmitter issues

[Rusty Nail]

I bought a used Losi XXL LST nitro for a steal about a week ago. I knew it needed work but thought I made out either way. I've got the 454 motor started and working on tuning it in. I am having issues with the receiver or maybe the transmitter which is not really allowing me to really tune it like it should. The issue is all the servos start twitching when i turn it on. When I turn it on first thing, they seem to be working fine but after about 30 seconds that when the issues start. I made sure the battery in the truck was charged and even tried another battery source thinking it might be that but it doesn't seem to be it. So I used other servos on the receiver and they act kind of glitchy too. So I don't know if the issue is the receiver or the transmitter. They are both ones that come with the truck originally, DX3S and the telemetry Spectrum receiver. I guess I could just buy another receiver and see, but like most, I try to do it cheap first. Thanks for any help.

 

[Certified Mike]

Is the glitching happening with the truck running or not? Does it do the same thing when it is running and when it is not?

 

[Rolex]

Were the batteries in the radio replaced as well? Brand new alkaline, no mixing what you had laying around.
Move the radio farther away from the truck. Sometimes that helps, particularly with older AM or FM radios.

 

[WVNed]

Some Spektrum receivers require digital servos. Look the wiring over and make sure there are no places where the insulation has rubbed off.

 

[Rusty Nail]

It is happening when the truck is running (motor). The servos on the truck are JR z270 standard racing servos. If I'm not mistaken those are analog servos so maybe that could be it. I haven't had a chance to put brand new batteries in the transmitter so I will try that. All the insulation seems to be intact covering the wiring. The radio is the 2.4 GHZ and the Spectrum receiver is the one that comes stock with the truck along with the Spectrum radio DX3s.

 

[Rusty Nail]

OK so I bought fresh out of the pack batteries and put them in the transmitter. I hooked everything back up in the truck. Made sure the truck battery was freshly charged. Again for about 30 seconds things are good then it starts the servo glitching and the little orange signal light blinks very fast and not in any particular pattern, just randomly blinks. SO I rebound the radio and receiver and tried it again, same thing. I then took the receiver and plugged another external battery (fresh batteries) source with the same results. I also took the receiver with the other battery source and plugged in different servos and it did the same thing to those servos. They weren't digital either. SO, I guess I'm just going to buy another receiver and see if that helps. Seems to be the cheaper and best starting point...I guess. I can deal with motors all day long but this electrical stuff...yuk!

 

[WVNed]

Is this nitro or a dynamite .31 gas?

 

[Rolex]

You might want to check out the Flysky transmitter/Rx. They are amazingly cheap and I haven't heard any complaints. Do a search on eBay.

 

[Rusty Nail]

It

Is this nitro or a dynamite .31 gas?

It's the nitro

You might want to check out the Flysky transmitter/Rx. They are amazingly cheap and I haven't heard any complaints. Do a search on eBay.

I have a Futaba which I really like. I might just put one of those receivers in it.

 

[olds97_lss]

I bought 5 of these to use with my DX3C:
http://www.targethobby.com/3ch-dsm-2-24g-surface-receiver-for-rc-car-rc-truck-rc-bugg-p-4162193.html

Nearly tripled my range. At best, with the spektrum receivers, I'd get 100 yards, usually less. Now I can drive further than I can see to control.

 

[Rusty Nail]

Hmmm. I'll have to check those out. Thanks.

 

[Certified Mike]

As a thought, try mounting it in a different location, keep a decent amount of padding under it. It sounds to me like it's got a bad or broken solder joint. Keep it loose and after starting, just hold the receiver so that there is no vibration... If it stops the flashing, glitching etc... I would pop the kids off of it and look at the soldering... If you're not into soldering etc... (If this works) replace the receiver like you were talking about.

 

[Rolex]

I would pop the kids off of it

He might have meant "lids" instead of kids. Pop the kids off and you just might get arrested.

 

[Certified Mike]

My phone LOVES to change words on me!!! Add that to fat thumbs and you get my funk style typo-delic answers ALL the time!!!

Damned kids and their damned rock and roll music and their long damned hair!!!

 

[Rolex]

Damned kids and their damned rock and roll music and their long damned hair!!!

Just keep them off my lawn.

 

[Certified Mike]

Lol!!! I sent them to you from MY lawn! Your problem now!

 

[Rusty Nail]

As a thought, try mounting it in a different location, keep a decent amount of padding under it. It sounds to me like it's got a bad or broken solder joint. Keep it loose and after starting, just hold the receiver so that there is no vibration... If it stops the flashing, glitching etc... I would pop the kids off of it and look at the soldering... If you're not into soldering etc... (If this works) replace the receiver like you were talking about.

Yea my kids like to pop off too . I think I will try another receiver. I was talking to a guy today at the local hobby shop...yep we still have a brick and mortar one...he said that truck has sensors in the tranny that could have gone bad and is causing the problem. I have noticed the screen says no telemetry .. I guess I should have mentioned that before

 

[Certified Mike]

Lol @ the kids! I am not familiar with the telemetry settings on the radio... I am wondering if there might be a way to either disconnect the sensors from the receiver and/or just set the radio 'without telemetry' before you go out and spend money... You may only need a sensor replace? Unfortunately, this is where I have to step out on this repair. I am not familiar enough to guide you thru this part. I am SURE there is someone here who can answer these questions and guide you thru the rest. I'll still be here watching... I'd love to know where this goes and what the fix(es) turn out to be.
Like I said... I'll be here watching for those damned kids!!!

 

[Rusty Nail]

Here's what I found out so far. So I took the receiver out put in my futaba one and used my futaba radio 2.4. Everything seems to work but the steering is a little delayed. So anyway I hooked up different servos this time in each spot testing it individually and it seems the servo spot on the receiver is the issue. There is a little place on one of the servos wires too that may be causing the problem. I'm going to get another receiver and may be some different servos and see what happens. Thanks for all the help guys.

 

[Rolex]

Just keep us posted.