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tch_popeye
Mar 20, 2005, 06:04 PM
Hi all. Just thought I'd post my recent experience with Reflex XTR, a JR XP662 radio, and some spontaneous interface problems. Hopefully, somebody out there will benefit from this story.

For reference, I’m running Windows XP SP2. I’ve got an AMD Athlon 64 3200+ processor, 512 Mbytes of RAM, and NVidia 5200 GX video card. All in all, it runs not too badly if I set a couple parameters in my favour (e.g. simple aircraft model, low res, no smoke, etc.), but things would be better with a stronger video card.

Out of the box, Reflex functioned just fine. The initial controller/interface setup worked flawlessly, all of the channels centered correctly, etc. I was flying planes and helis… life was good.

After about 2 weeks, and approximately 8 hours of flying time, I installed the 5.01 upgrade patch for Reflex. Over the next couple of flights, I saw control surfaces start to glitch. Also, I could hear the throttle doing weird things occasionally. Within the next 15 minutes, I could not control anything. Centering would not work, and the Channel Display (F8) showed some channels at poor centers, others pegged either + or -, and some channels glitching all over the place.

Having read about the JR Quattro fix, I briefly considered setting out to find the appropriate resistor. It just didn’t read quite the same, though. *That* problem involves all channels pegged over the same way.

I tried to remove and reinstall Reflex, without the additional patch. Same problem. After adding the patch again, things were still mucked up. In retrospect, I don’t think that the patch had anything to do with this problem – the timing must have been a coincidence.

At last, my Web search engine turned up a reference to swapping the leads in the 3/16” connector (for the D.S.C./buddy box port). Although the explanation of this user’s problem involved a malfunction from day 1, it seemed like an easy thing to try anyway.

After desoldering the 2 wires, and reconnecting them in the opposite configuration, I now have the white wire connected to the shield/base, and the brown wire connected through to the tip of the plug…

Presto! Everything works just fine again.

Interestingly, and of some vague similarity to another user’s post, I got a good spark (high voltage charge separation) from this modified connector once, before screwing the cover back over top of the connector. It hasn’t affected operation at all, though – nothing seems to have been damaged. With the cover back in place, I’d be hard pressed to detect any abnormal charge accumulation, anyway.

Obviously, I cannot assume any responsibility for your computer, radio, or USB security dongle if you try to fix a similar problem in a similar fashion. If you’re reading this with an interface problem of your own, may you have the best of luck with whatever remedy you pursue.

-Trevor

steelgtr
Mar 21, 2005, 09:47 AM
Did this correct the "Tx off/on switch reversal?

bob

Hi all. Just thought I'd post my recent experience with Reflex XTR, a JR XP662 radio, and some spontaneous interface problems. Hopefully, somebody out there will benefit from this story.

For reference, I’m running Windows XP SP2. I’ve got an AMD Athlon 64 3200+ processor, 512 Mbytes of RAM, and NVidia 5200 GX video card. All in all, it runs not too badly if I set a couple parameters in my favour (e.g. simple aircraft model, low res, no smoke, etc.), but things would be better with a stronger video card.

Out of the box, Reflex functioned just fine. The initial controller/interface setup worked flawlessly, all of the channels centered correctly, etc. I was flying planes and helis… life was good.

After about 2 weeks, and approximately 8 hours of flying time, I installed the 5.01 upgrade patch for Reflex. Over the next couple of flights, I saw control surfaces start to glitch. Also, I could hear the throttle doing weird things occasionally. Within the next 15 minutes, I could not control anything. Centering would not work, and the Channel Display (F8) showed some channels at poor centers, others pegged either + or -, and some channels glitching all over the place.

Having read about the JR Quattro fix, I briefly considered setting out to find the appropriate resistor. It just didn’t read quite the same, though. *That* problem involves all channels pegged over the same way.

I tried to remove and reinstall Reflex, without the additional patch. Same problem. After adding the patch again, things were still mucked up. In retrospect, I don’t think that the patch had anything to do with this problem – the timing must have been a coincidence.

At last, my Web search engine turned up a reference to swapping the leads in the 3/16” connector (for the D.S.C./buddy box port). Although the explanation of this user’s problem involved a malfunction from day 1, it seemed like an easy thing to try anyway.

After desoldering the 2 wires, and reconnecting them in the opposite configuration, I now have the white wire connected to the shield/base, and the brown wire connected through to the tip of the plug…

Presto! Everything works just fine again.

Interestingly, and of some vague similarity to another user’s post, I got a good spark (high voltage charge separation) from this modified connector once, before screwing the cover back over top of the connector. It hasn’t affected operation at all, though – nothing seems to have been damaged. With the cover back in place, I’d be hard pressed to detect any abnormal charge accumulation, anyway.

Obviously, I cannot assume any responsibility for your computer, radio, or USB security dongle if you try to fix a similar problem in a similar fashion. If you’re reading this with an interface problem of your own, may you have the best of luck with whatever remedy you pursue.

-Trevor

tch_popeye
Mar 21, 2005, 12:25 PM
Did this correct the "Tx off/on switch reversal?

bob

Hi Bob:

I'm not sure if I may have written an unclear description of my particular problem... I never did have any problem with the Tx switch (that I know of).

On the JR XP662, I don't even *use* the Tx switch - inserting the 3/16" plug into the DSC jack causes my Tx to turn on, and removing the plug switches the Tx off. I've never even moved my actual power switch while running the simulator. I'm not certain, but for this model Tx, I think that the RF broadcast circuit is intentionally defeated this way, i.e. power switch off & DSC connected (this indicates the "slave" unit when buddyboxing, to avoid sending any RF signals from the trainee).

I hope this is clear... does it help?

-Trevor