dbhale1943
Member
Over the years I've counted over 24 great PJRC products which have never let me down.
Thanks very much for quality products and informative forums, too!
I am building a synth (32 waveform + 32 wavetable, 8 channel audio) project utilizing four T4s and a T3.6 (USB MIDI and serial connection to a Processing 3 app) in control of the T4s via serial MIDI. I am anxious to get a few more capabilities operational before demonstrating and sharing.
On Nov. 30 the last T4 was purchased at the Sharonville, OH Microcenter and I checked to be sure it worked and then placed it back in its ESD envelope.
Around Dec. 17th, I was attempting to write unique EEPROM board numbers on all six T4s (so that the synth software can react in a distinct way to midi messages). When first powering up the subject T4, I discovered that it died.
Reviewing a number of online T4 failure reports as a guide, I tried to ensure the problem couldn't be fixed.
No connections were made to the subject T4. Today, while USB connected, the 5 volt pin was within spec, but the USB current read zero. No LED lights up. The 3V pin read 0 volts. Tried the reset button. Then even tried grounding the program pin for >15 seconds.
So I am guessing this T4 now has a bad 3.3V regulator.
I am thinking that there is nothing more to try. Any more suggestions would be appreciated.
(OK, this is my first time here. Did not see instructions. Don't why there are 2 submit buttons...Please forgive my ignorance of what mistakes i may make...)
Thanks very much for quality products and informative forums, too!
I am building a synth (32 waveform + 32 wavetable, 8 channel audio) project utilizing four T4s and a T3.6 (USB MIDI and serial connection to a Processing 3 app) in control of the T4s via serial MIDI. I am anxious to get a few more capabilities operational before demonstrating and sharing.
On Nov. 30 the last T4 was purchased at the Sharonville, OH Microcenter and I checked to be sure it worked and then placed it back in its ESD envelope.
Around Dec. 17th, I was attempting to write unique EEPROM board numbers on all six T4s (so that the synth software can react in a distinct way to midi messages). When first powering up the subject T4, I discovered that it died.
Reviewing a number of online T4 failure reports as a guide, I tried to ensure the problem couldn't be fixed.
No connections were made to the subject T4. Today, while USB connected, the 5 volt pin was within spec, but the USB current read zero. No LED lights up. The 3V pin read 0 volts. Tried the reset button. Then even tried grounding the program pin for >15 seconds.
So I am guessing this T4 now has a bad 3.3V regulator.
I am thinking that there is nothing more to try. Any more suggestions would be appreciated.
(OK, this is my first time here. Did not see instructions. Don't why there are 2 submit buttons...Please forgive my ignorance of what mistakes i may make...)