My OSD will sometimes not show up on power up.  Typically almost always on first power up.  Once it shows up though, it seems to show up again if I replace lipos quickly.  Already tried re-uploading the font file.

Is this a sign of a failing OSD chip?

Could be. I have an FC with a similar problem. Ended up eventually just died. Of course check for solder balls.

Just the OSD chip died or the whole FC?

Hmm, not the same but similair issue. When I do punch outs I get flickers/blinking OSD with my brand new diatone F405 MKII. The rest of the picture is crystal clear. Power issue or failing OSD chip? I have a 35V 1000uF cap installed on the ESC power pads

(19-Aug-2020, 08:41 AM)Andreas-sa Wrote: Hmm, not the same but similair issue. When I do punch outs I get flickers/blinking OSD with my brand new diatone F405 MKII. The rest of the picture is crystal clear. Power issue or failing OSD chip? I have a 35V 1000uF cap installed on the ESC power pads

You can have a common ground issue. If you ground both the camera and VTX to the same ground, that usually solves the problem.

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(19-Aug-2020, 05:48 AM)the.ronin Wrote: Just the OSD chip died or the whole FC?

The OSD chip eventually just died. FC was still perfectly OK.

Ok thanks voodoo! I will look for a solder blob. My soldering skills leave much to be desired.

Ansreas, for me, it's just whether the OSD decides to turn on when I plug in. If it's on, then it works great for as long as the lipo is plugged. Encouragingly, went out this morning and the OSD came on just fine even on the first pack. No issues at all across 7 packs. FPV ... the sometimes cruel sometimes giving mistress lol.

(19-Aug-2020, 03:40 PM)voodoo614 Wrote: You can have a common ground issue. If you ground both the camera and VTX to the same ground, that usually solves the problem.

Nope, not that. I power my camera from the VTX (TBS Unify pro HV) both 5V and ground.

Ah ... is that why VTX's typically have camera power outs? I always power my camera through the FC but that's entirely to keep the wiring clean (instead of a single video wire to the FC and + / - wires to the VTX).