Optic/Spectra Glitching  
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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> Radio Manufacturer Direct Support >> Hitec/MultiPlex Radios- Ask Hitec Customer Service >> Optic/Spectra Glitching
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Optic/Spectra Glitching - 6/21/2006 6:25:43 PM   
MikeMayberry



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From: Poway, CA, USA
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Hey guys,

We are very sorry for these problems.

We've been looking into this issue and it appears that the problems stem from the fit of the module in the case cavity.

We have found that the problems go away when the module is more secure in the case... this can be achieved by using electrical tape on both sides of the module preventing it from moving around.

So at this time we would suggest everyone with an Optic and spectra module should do this. However, this problem only seems to take place with Spectra modules with a date code of 7/05 or newer. You can see the date code on a little round sticker on the module... 507 = 7/05. The first digit is the year with the second two the month.

We are working on a more permanent solution and will post the info on this when it is finalized.

Mike.

< Message edited by MikeMayberry -- 6/21/2006 6:26:02 PM >


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RE: Optic/Spectra Glitching - 6/22/2006 8:48:56 PM   
still4given



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From: Victorville, CA, USA
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How do you get 7/05 out of 507? Why would somone intentionally reverse the numbers and what year/month does 507 stand for? July, 2005? May, 1997? I don't get it. Please explain. I will pick up some electrical tape and try it. Unfortunately, I may not know if it truely worked until I get my plane in the air. It doesn't glitch all of the time and only sometimes does it lose total signal. What happens if this band-aid fix doesn't work as it should and another one of my planes hits the dirt? Why is it that the Spectra module loses contact when it only moves a fraction of an inch. The pins go into the module almost 1/2".



Thanks, Terry

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Live simply. Love generously. Care deeply.
Speak kindly. Leave the rest to God

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RE: Optic/Spectra Glitching - 6/22/2006 9:52:42 PM   
MikeMayberry



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I explained that the first digit is the year and the second two are the month; that's just how they do it Korea. Not everywhere in the world do they list the month first.

It is advisable to do an extensive range check and test to the extent that you are comfortable before flying. Our tests show this solved the issue in 100% of the units we tested.

Mike.

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RE: Optic/Spectra Glitching - 6/27/2006 4:00:36 PM   
still4given



Posts: 462
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From: Victorville, CA, USA
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Hi Mike,

Well, it didn't solve the issue in mine. I put the tape on the side of the Spectra modules. It is difficult to slide in and out now because of it but the one radio still has a dead spot where there is no signal being transmitted If you pull the module out a bit and work it in and out you can get it to transmit but the plane still glitches. My other one doesn't loses signal completely but the plane will glitch sometimes. I had to pull the module out and reinstall it a couple of times to get the glitching to stop. I did this at a field where no one else was at. If I turned off the transmitter off, the plane was completely calm. It only glitched when the transmitter was on. This is not a good thing. We have to be able to trust that our radios will work properly. There is great danger when a plane loses signal while flying.

Neither of my two Optic 6 transmitters have ever been dropped. Like I said, I do pull the modules several time a day while flying since I have several planes and they are all on different frequencies. That is what attracted me to his radio in the first place. I couldn't find my receipt for the first one I bought but I have a receipt for the Trainer I bought for my son the same day. It was Jan 14, 2006, so the transmitter is just over 6 months old. Can I get Hitec to warrant the work on this radio without a receipt? Surely you should be able to tell how old it is by the serial numbers or something. Please let me know. I may be able to get Hobby People to give me some sort of print-out for the day I bought it, but I'm not sure.

Thanks, Terry

_____________________________

Live simply. Love generously. Care deeply.
Speak kindly. Leave the rest to God

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RE: Optic/Spectra Glitching - 7/6/2006 8:24:34 PM   
MasterAlex



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From: Central, IN, USA
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Mike,

Any progress that you can report??

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RE: Optic/Spectra Glitching - 7/20/2006 10:20:19 AM   
*JCB*



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From: Redondo Beach, CA, USA
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my spectra module has a date of 12-04, should i be ok? i lost a plane to a glitch/radio hit just a couple of weeks ago and after reading this, i am VERY leary about continuing to fly with this radio.

thanks!

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Shake Things Up!

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RE: Optic/Spectra Glitching - 7/24/2006 8:47:18 PM   
still4given



Posts: 462
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From: Victorville, CA, USA
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Hi Guys,

Ok, I wanted to report on what has transpired with my transmitters. I sent both in and received them back in about 1 1/2 weeks. The paper with them stated !QUOT!no problem found!QUOT! for both transmitters and !QUOT!intermittent!QUOT! for both Spectra modules. Hitec sent the transmitters back with replacement modules in them. I just tested them with a couple of planes and didn't see any glitches with either transmitters so for now, I'll assume that it was just the modules. I am still a bit leery of using them and will do some further testing before I try flying them again. I have converted most of my planes over to spread spectrum at this point. I may just wait to use these optic 6's until Hitec comes out with their version of the 2.4ghz.

Blessings, Terry

_____________________________

Live simply. Love generously. Care deeply.
Speak kindly. Leave the rest to God

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RE: Optic/Spectra Glitching - 7/24/2006 10:25:50 PM   
Flying-Preacher


 

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Don't pull the train off the tracks right now; this issue is NOT restricted to the Optic line of transmitters!! I'm an Eclipse 7-channel owner having this problem. I just wrote a fairly detailed missive to the Tech Support guys at Hitec concerning symptoms in my Eclipse 7-channel transmitter that mirror your experiences. Something stinks here, and its not the truckload of pigs that just drove by.

My Eclipse 7-channel was purchased in October 2005, and performed in what I would characterize as a flawless manner until late February/early March this year. Since then, I have lost one nice Fancyfoam SU-29, and severely damaged a 10-300 Bipe by the same guys. I initially assumed that I'd experienced RFI or some other inexplicable phenomena, but over the last couple of months I zeroed in on the transmitter by: (1) purchasing a brand new Electron 6-channel receiver; (2) installing a relatively brand new Airtronics 92777Z receiver from another bird in my library.

The symptoms remained the same - wild fluttering of the control surfaces, servo hum, and the motor cannot be made to stop completely. I further noted that ANY subtle pressures on the Spectra module will cause extreme fluctuations and engine transitions. But even worse, you don't even have to be holding the transmitter for wild and crazy movements of the surfaces to occur!! At other times, there appears to be no signal at all coming from the transmitter, and then with a touch the signal reappears.

I wrote to Hitec this morning to ask questions about repairs, but NOW I see this is a broadening concern among the community of users who purchased their product. The trickle of complaints will soon become a flood. This is NOT an issue of repair ... a modification is in order.

To the guys at Hitec: Stop, Look and Listen!! Your customers are bringing YOU an issue that demands your most serious attention. I'm talking about your reputation in the marketplace, and (because we DO like your product) we're trying to get you to step to the front and give us some world-class customer support. Otherwise, we vote with our feet, and we won't be back!! A reputation for quality products and world-class customer service is priceless, and no amount of advertising dollars can or will redeem you if this BROADENING and GROWING issue is not quickly addressed to our satisfaction.

I speak from a long and extensive background in customer service, and I know that this thing is not going to just go away. You must take the positive and agressive steps to demonstrate to your customers that you care about their experience with your product. Listen, I believe you are apologetic for what I'm experiencing ... that's nice; but I have an issue that must be resolved, and I need a bit more than apologies ... I need a long-term solution.

Grace and peace,

The Flying-Preacher.

(in reply to still4given)
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RE: Optic/Spectra Glitching - 7/25/2006 12:17:27 AM   
MikeMayberry



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From: Poway, CA, USA
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If you are still having problems, we suggest you send the radio and module in as there may be other issues other than the fit.

We are working for a more permenent solution but adjusting the fit with the tape has soved 90+% of the problems.

Please don't think we are sitting around hoping this problem will go away... As indicated we do offer World Class customer support and we are no way turning our backs on our customers that are having problems. Again, if you are still having any problems send your radio in and we will make sure it works the way it should before sending it back for you to use.

Mike.

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http://www.hitecrcd.com

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RE: Optic/Spectra Glitching - 7/25/2006 2:02:18 AM   
still4given



Posts: 462
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From: Victorville, CA, USA
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Hi Mike,

Please don't think that we don't appreciate your involvement here. We do. I know that you feel that adding a piece of tape to the side of these modules is some kind of solution but it really appears that this is a time issued and not a fit issue. Both of my transmitters worked great when I first received them. It was only after a short period of time that they began to digress. Once it started though, it went south quickly. Losing a plane to radio problems is the most helpless feeling I can think of, not to mention dangerous. By the way, Your tech department replaced my modules with what apprear to be not new units. Perhaps they are rebuilt but the cases have scratches on them. If the fix is to add tape to them, why didn't your tech department do that? There is no tape on these modules.I still don't understand how side to side movement the thickness of one piece of tape is causing failure to these when the pins go into the module at least 1/4". This seems more like some kind of degradation to me.

Blessings, Terry

_____________________________

Live simply. Love generously. Care deeply.
Speak kindly. Leave the rest to God

(in reply to MikeMayberry)
       Post #: 10

RE: Optic/Spectra Glitching - 7/26/2006 1:13:15 AM   
buzzard bait


 

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Mike, if Hitec has identified a date of manufacture after which there are problems then the obvious response should be a recall. Otherwise what do we do, wait until one of our planes crashes? And it's not just the property loss, these things weigh several pounds, go 60 mph, and spin fibreglass knives at 14,000 rpm. A recall is what other manufacturers do when they produce something hazardous. Isn't Hitec worried about liability issues arising from a known hazardous defect? I certainly am.

I just bought one of these and didn't even intend to get a Spectra module. ServoCity was taking forever to get my frequency module so they finally sent me a Spectra module at no extra cost. A nice upgrade, till I saw this thread. Now I'm stuck with it.

In the meantime, it sounds to me like the only safe thing to do is to buy a regular frequency module. Isn't that correct? That's an expense we shouldn't have to incur. But waiting for Hitec to come up with a solution does not sound like a good option.


Jim

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RE: Optic/Spectra Glitching - 8/1/2006 4:23:43 AM   
glenclif



Posts: 24
Joined: 10/30/2002
From: New Smyrna Beach, FL, USA
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I totally understand the frustration with the Optic 6. I wish I had seen this thread before I shipped my Optic 6 today. This sounds like the same problem I'm having, and fortunately I haven't crashed anything because I woudn't dare take a chance flying with this radio again.

I'm flying electrics and when I plug in the battery, the servos begin to jitter severly and swing to full throw, and the motor begins to turn on and off erracticaly. That would make sense if the TX wasn't transmitting a signal. I did not try jiggling the Spectra to see if it solved the problem.

Mine is already on the way to Hitec service for the 2nd time in less than 8 months for the same problem. If it is truly the Spectra module, then I would rather just have a fixed frequency replacement radio, as it's not worth losing a custom built plane over having the ability to change channels.

On the other hand, my Flash 5 has worked flawlessly for going on 5 years. Never a glitch or problem other than a new battery.

Hitec service has been outstanding in the past and I have no reason at this point to think otherwise....... but I now have spent $22.80 on shipping to Poway ($11.40 x 2 ) which no longer makes this radio a good buy.


Mike,

My radio is already on the way, please keep it as long as necessary to find the correct repair as it is useless with these problems. Feel free to throw in a couple of HS55's on the return trip to make up for the shipping I've had to pay to get the radio back to California two times.

Glenn

< Message edited by glenclif -- 8/1/2006 3:06:42 PM >

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RE: Optic/Spectra Glitching - 8/7/2006 10:45:51 PM   
Flying-Preacher


 

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8/7/2006 Update: After venting my frustrations at the "solution" of electrical tape, I thought to myself, "go ahead and give it a try." And try I did! I wrapped the Spectra module with electrical tape on (one layer only) on both ends, and I managed to "squeeze" it back into the cavity by incrementally pushing it in and pulling it out until the tape was depressed enough to allow the module to fully seat, while being able to remove it without breaking the tabs securing the module. I actually enjoyed ONE flight on one of my birds before "WHAMMO, ZAP, JITTER" and the previously mentioned uncharacteristic symptoms returned with a vengeance. So, today in humility, I've bundled up my precious toy and shipped it off to Hitec Customer Service.

At the end of the day, the only recourse left is to trust Hitec to find and repair this issue or chuck the Spectra module for a fixed frequency and HOPE against hope that there's nothing else wrong with the basic transmitter beyond that. You see, our discussions to this point have focused on the performance of the Spectra module, but it occurs to me that the symptoms I've experienced for all practical purposes could also be in the transmitter circuitry somewhere, giving the appearance of an issue with the Spectra module.

A good control test would be to insert a basic frequency module into the cavity and see how the system performs; unfortunately, I don't have a fixed frequency module at my disposal. Can anybody speak to the matter of "life after the Spectra module?" In other words, has anybody canned the Spectra module and found that the performance issues vaporized?

Now, we wait. "Wait, I say on the Lord."

Pastor Mike

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RE: Optic/Spectra Glitching - 8/7/2006 11:48:56 PM   
glenclif



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From: New Smyrna Beach, FL, USA
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Pastor Mike,

I'm glad I'm not the only one who thinks there is more of a problem than the Spectra Module. I shipped mine last week for repair.

Fortunately I did not loose a plane as others have, when this radio started acting up again, I used my Flash 5.

I too would be happy to have an Optic 6 that works properly, even if I have to ditch the Spectra and use a fixed frequency crystal.

I'm sure Hitec knows there are other issues besides a loose Spectra, and I suggest you send yours in for repair as I did. Hitec has a good service reputation and I'm sure they will solve this issue.

( A little prayer for the technicians woudn't hurt either )

Glenn



(in reply to Flying-Preacher)
       Post #: 14

RE: Optic/Spectra Glitching - 8/8/2006 3:43:29 AM   
Flying-Preacher


 

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Glenn: I did bundle it up today, and I sent it by Priority Mail to Hitec's Customer Service. I don't have an objection to the technicians looking the entire system over; I think what I was really objecting to was the suggestion that "electrical tape" around the module would resolve the issue. I didn't trot out (or hold up to brag about) my nearly 20 years of maintaining highly complex Air Force space-ground communications systems along with various radar transmitter/receiver systems, and main-frame computer systems, but I can tell you from the perspective of those years of experience that throwing a little electrical tape around that Spectra module sounds very much akin to the old "Throw a little Duct tape" on some malfunction. It doesn't pass a certain test of reason for the fact that the pins on the connector block inside the cavity where the Spectra module resides are nearly .5" long. They protrude up into the female pins at LEAST that much. So, what does a little electrical tape around the edges of the module do for the electrical connection? NADA!! ... ZILCH!

I'm simply asking the folks at Hitec to give us a little credit fo