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IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now. Visit Preferences to set your user name Summary of change: turbocharged 1993 VW air cooled Mexican bug Hi from Mexico v3.x Serialnr: ..... '''Short history of the board''' * purchases as assembled or mainboard ? * ... I have a few problems with my genboard. When run VemsTune the software detect the board but pop up a window with legend device disconnected and the firmware upload menu is in grey color * Verify the RS232 connection, document here your wiring and voltage measurements: ** DSUB9/2 - ... ** DSUB9/3 - ... ** DSUB9/5 - ... Another thing the volt reg u20 gets very hot and the mosfet drivers gets warm * this sounds bad ** verify (measure) polarity and supply voltage: ... V ** measure current consumption: ... mA Make sure to follow instructions. * is there a chance +12V power was applied without grounds connected properly ? ** we've seen a case this year when GND came off (!) while +12V was applied (so powering GND through some FET outputs and atmega inputs => not good). This is also the reason why disconnecting EC36 under powerup is not allowed (damage is too likely). See grounds connection: http://vems.hu/download/v3/doc/ConnectingPower4.jpg For assembled board, see relevant info http://vems.hu/download/v3/doc/ (also useful for home-assembled box unless one intentionally deviates) Optional: Add document to category: Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.