mongrol Posted March 8, 2016 Report Share Posted March 8, 2016 (edited) Hi folks, After replacing the header on one of my oled displays I've found it only shows garbled text (see pic). I've reflow/soldered all connections, changed cables and ran through the testlcdpin tests which have proved positive at the oled end. Is there anything else to try or do I now have a expensive duff display? Edited March 8, 2016 by mongrol Might help if I attached a picture. Quote Link to comment Share on other sites More sharing options...
latigid on Posted March 8, 2016 Report Share Posted March 8, 2016 Check the orientation/soldering of your resistor network/595. Can't see your pic btw. Quote Link to comment Share on other sites More sharing options...
mongrol Posted March 8, 2016 Author Report Share Posted March 8, 2016 Thanks lat. It must be ok. This display was working just before I changed the header. I've proven both cables and the core with my other working display. Quote Link to comment Share on other sites More sharing options...
latigid on Posted March 8, 2016 Report Share Posted March 8, 2016 If it all works with other displays/cables, then it's the display. TK could probably tell what pin is buggered from the output, but not a mere mortal such as myself. Sadly it's quite easy to cook the onboard registers, even as much as shorting pins together with a multimeter probe, experiments with 5V/3v3 fiddling, backwards cable etc. Quote Link to comment Share on other sites More sharing options...
Hawkeye Posted March 8, 2016 Report Share Posted March 8, 2016 Also check for a stable power supply - these Raystar OLEDs have some trouble, if there is some noise (e.g. from a cheap switching PSU) on the line. How do you power your SEQ? USB? You might change the USB-cable or the USB power supply for a test... Many greets, Peter Quote Link to comment Share on other sites More sharing options...
mongrol Posted March 8, 2016 Author Report Share Posted March 8, 2016 (edited) Another sympton is when powering on it stays blank. It takes a reset from either the Discovery button, or doing a "testlcdpin reset" to get it show it's gibberish. I'm going to change the header on my working OLED next. If I'm going to break both of them I might as well do it before I order new ones. :) Edited March 8, 2016 by mongrol Quote Link to comment Share on other sites More sharing options...
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