TNMC not lighting; Insufficient output voltage from power supply for preceding driver
Potential Symptoms
- TNMC not lighting.
- May observe periodic blanking of TNMC.
- Getting proper 10-14 vDC input signal voltage to TNMC driver but output signal (re-drive) voltage measures too low (i.e. 5vDC).
- If driver feeding blanking TNMC driver is swapped with a working driver, output signal voltage is unchanged.
- Power supply is rated for output of (3 - 6.5vDC) and is measuring output of 3vDC at lower end of output rating.
Environment
- Product Family: Sports Product
- Product: Scoreboard with Electronic Captions or Team Name Message Centers (TNMCs)
- Component: Driver signal voltage re-drive
- Control System:
Cause
- Insufficient output voltage from power supply to the driver feeding the blank TNMC.
- Resulting in inability to re-drive strong enough signal voltage for the next driver.
Resolution
- Replace power supply.
Related Article: TNMC not lighting; Insufficient re-drive signal voltage output from preceding driver; DD2235748.
KB ID: DD4127905
DISCLAIMER: Use of this content may void the equipment warranty, please read the disclaimer prior to performing any service of the equipment.
DAKTRONICS DOES NOT PROMISE THAT THE CONTENT PROVIDED HEREIN IS ERROR-FREE OR THAT ANY DEFECTS WILL BE CORRECTED, OR THAT YOUR USE OF THE CONTENT WILL PROVIDE SPECIFIC RESULTS. THE CONTENT IS DELIVERED ON AN "AS-IS" AND "AS-AVAILABLE" BASIS. ALL INFORMATION PROVIDED IN THIS ARTICLE IS SUBJECT TO CHANGE WITHOUT NOTICE. DAKTRONICS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTIES OF ACCURACY, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. DAKTRONICS DISCLAIMS ANY AND ALL LIABILITY FOR THE ACTS, OMISSIONS AND CONDUCT OF YOU OR ANY THIRD PARTIES IN CONNECTION WITH OR RELATED TO YOUR USE OF THE CONTENT. ADJUSTMENT, REPAIR, OR SERVICE OF THE EQUIPMENT BY ANYONE OTHER THAN DAKTRONICS OR ITS AUTHORIZED REPAIR AGENTS MAY VOID THE EQUIPMENT WARRANTY. YOU ASSUME TOTAL RESPONSIBILITY FOR YOUR USE OF THE CONTENT AND ANY LINKED CONTENT. YOUR SOLE REMEDY AGAINST DAKTRONICS FOR DISSATISFACTION WITH THE CONTENT IS TO STOP USING THE CONTENT. THIS LIMITATION OF RELIEF IS A PART OF THE BARGAIN BETWEEN THE PARTIES.
The above disclaimer applies to any property damage, equipment failure, liability, infringement, or personal injury claim arising out of or in any way related to your use or application of the content, whether such claim is for breach of contract, tort, negligence or any other cause of action.