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08-26-2012 | 01:06 PM

#12

Jeff489

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RE: Spektrum dx5e help!

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name="Colorful Grid Accent 6" unhidewhenused="false" semihidden="false" priority="73" locked="false"></w:lsdexception> <w:lsdexception name="Subtle Emphasis" qformat="true" unhidewhenused="false" semihidden="false" priority="19" locked="false"></w:lsdexception> <w:lsdexception name="Intense Emphasis" qformat="true" unhidewhenused="false" semihidden="false" priority="21" locked="false"></w:lsdexception> <w:lsdexception name="Subtle Reference" qformat="true" unhidewhenused="false" semihidden="false" priority="31" locked="false"></w:lsdexception> <w:lsdexception name="Intense Reference" qformat="true" unhidewhenused="false" semihidden="false" priority="32" locked="false"></w:lsdexception> <w:lsdexception name="Book Title" qformat="true" unhidewhenused="false" semihidden="false" priority="33" locked="false"></w:lsdexception> <w:lsdexception name="Bibliography" priority="37" locked="false"></w:lsdexception> <w:lsdexception name="TOC Heading" qformat="true" priority="39" locked="false"></w:lsdexception> </w:latentstyles></xml><![endif]><![if gte mso 10]><style type="text/css"> Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}</style><![endif]>I've got a few ideas.First, I think you've eliminated battery problems. Low voltage in a Tamiya DMD/MF system causesthe DMD to cut off intermittently. In such a case, everything would die, and then the tank would perform a restart. This process repeats over and over. You've obviously got right track power, so I'd suggest looking elsewhere.When I have a problem with a tank(and know I've got good power), I always try to isolate whether it is a tank problem or radio problem. To check for a radio problem, I use a 4.8v receiver battery (local hobby shops sell them for fairly cheap) and a spare servo (Local hobby shop...again). I remove the receiver from the tank (I disconnect everything from the rx) and then plug the battery into the rx's "batt" terminal. Next, I plug in the servo to each channel on the rx (one at a time, checking each for operation). If all channels respond to the check, I pronounce the radio and rx good, and reinstall it in the tank. I move on to the tank as the source of problems.To begin checking the tank, double check the motor wiring. This would be the wires from the DMD to the motors. Refer to your Panther instruction manual at page 15. Double check the right and left motor connections.If all is well, put the tank up on a safety block on the bench to prepare for a test run.Next, open the tank, and run test the tank. Try the right turn. Observe what color the DMD lights are at the moment the malfunction occurs. Refer to your Panther operation manual (the little book that came with the tank) and look at pages 17-19 to see if you can find the corresponding error code and the meaning. If this fails, then I would perform a reprogram of the DMD Check the Panther assembly manual at the top of page14 for the instructions to see how to do one.
Note, that you can also adjust the direction of the tank's drive (a.k.a.the yaw rate) with a small pot on the DMD (marked "rudd") located on the DMD's upper left side, right between the "set" and "MGun"adjustment pots. Inconsistent speed (right vs. left) track can be trimmed out using the "Rudd" pot on the DMD, trimmed using your TX trim tab, adjusted manually (usually caused by a bind in the drive train), or in some instances, it can be motor timing. IMHO, it is usually a mechanical binding issue. I adjust them by disconnecting the motor from the TU, and spinning the track manually to feel for the resistance. I spin each side, feeling for a difference in resistance. Usually, it is something as simple as too little gear lash between the motor pinion and the TU.
If it still doesn't turn correctly, I would change out the DMD with a spare (only if you have one), or by borrowing a DMD from another tank (again, only if you have one).If all has failed, you may have a defective DMD T-03 unit and contact the manufacturer by email for further instructions and assistance.Good luck!

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