HDTV1080P Posted April 21, 2020 Author Share Posted April 21, 2020 (edited) 3 hours ago, -^CrossBow^- said: The charger I used is a legit Apple iPad charger that came with a Gen3 iPad Air. It is 5v at 2.1A. It has been working fine for me until the weekend. What happened is that I had it all plugged into the charger and into the adapter but didn't have the adapter plugged into the colecovision itself. Because of this, the power adapter continues to build up heat and apparently that burned out both the +5 and -5 regulators on the ColUSB. Because I'm only getting +12 off it now and nothing on the 5 volt sides. But a normal CV power supply is working fine on the same colecovision. Also I didn't mention it but it was only left like this for a few hours one afternoon. So it wasn't like this all weekend or days..etc. Just sitting connected on my bench but not plugged into the CV for a few hours. I came back to plug it in and noticed how hot it had gotten along with the warping of the plastic. The plastic went back into shape when it cooled down but the adapter is no longer working. There is in small print a statement that says it is recommended to unplug the adapter from the charger when not in use. But it says recommended, not required and even then I'm willing to bet that most people won't notice that if they even bothered to read the included manual. I mean..you plug in your USB A to USB C cable to the charger and then the C end into the ColUSB and that plugs into the CV. I've reached out to Dragonbox and created a case ticket but have only received the automated message stating it had been sent. Nothing more. It most likely was a problem with the brand and model of USB charger that you used. Many ipad chargers have fast charging modes that can switch from 5 volts to output up to 20 volts over USB (But normally a handshake is required before the USB charger would switch to a higher voltage). The 12 volt regulators in the Col USB adapter might be able to handle a 20 volt input and regulate the voltage to 12 volts. However regulating the voltage from 20 volts to 5 volts might blow the regulator in the Col USB. However Dragonbox company would be able to tell you how good the regulators are and their exact specs. Try measuring the voltage coming out of the USB cable or charger directly to make sure its 5 volts. The charger might have malfunctioned and switched to a higher voltage like 20 volts. So far I have connected two 17 wattt 3.4 amp ColecoVision solutions mentioned in the first thread. One ColUSB is connected to the ColecoVision with the power switch on the ColecoVision completely off. The other ColUSB is not connected to the ColecoVsion. So far no heat at all. The Col USB adapter when there is no load to it is not producing any heat using the parts mentioned in the first thread. The only way I am able to generate a small amount of normal heat to the Col USB adapter is to turn on and use the ColecoVision. I will let both 17 watt 3.4 amp ColecoVision power adapter solutions run at least 48 hours without being connected, but so far no load equals no heat to the Col USB. It appears that there was something wrong with the brand and model of USB power supply charger that you used, or maybe the ColUSB adapter went completely bad without a problem with the USB charger. Hopefully its under warranty from the company you purchased it from. Edited April 21, 2020 by HDTV1080P Quote Link to comment Share on other sites More sharing options...
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