no trace

[loudspeaker]

sorry, i cant speak english very well...

I have problem..
+5V - OK
+3,3V - OK
AV+ - OK cca 5V
AV- not work > +0,7V, must be -5V

problem is Q1 and Q2???

OS work, display ok.. only no trace....

[jye1]

Please first make AV- normal.

[loudspeaker]

I do not understand this answer
I'm so sorry ..

Inspect all topics, but so far no solution even though people have the same problem ..

Q1 and L2 are so hot in 30sec. I'm afraid it will burn

[loudspeaker]

I found possible bug..? VGEN = 0.0V.. I suppose processor no work correctly?..
but OS work, commands too..

Q1 and L2 are cold now, probably dead.....

[jye1]

Please read the following post if you haven't and follow the steps to troulbeshoot AV- problem.

http://www.jyetech.com/forum/viewtopic.php?f=18&t=455

Generally you need to make display work first. Do the troubleshooting with display module plugged in because the firmware will not generate VGEN if TFT controller is not recognized. This is true for firmware version -041 or later.

[loudspeaker]

thnx! I'll do testing all options...

[loudspeaker]

fixed!!! I exchanged Q1 = SS8550, Q2 (used 2N2222A) and L2 (used 1mH;800mA). uf... original parts were probably bad.. about destiny