#No video Mamba F405 MK4 mini + VTX 500

1 messages · Page 1 of 1 (latest)

west pilot
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I am bench testing a subject stack, but not getting video. Followed some videos and soldered cam video directly on vtx and it works.
i have set on uart 3 irc tramp and added user1 as per instruction. When i power up i get a gray screen.....what could be the problem?

torpid lynx
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Please show a clear photo of your wiring

west pilot
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i only desoldered the 2 yellow wires, soldered them togheter and have video in goggles

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it's all brand new stuff

torpid lynx
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Can you post a CLI dump?

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And the output of status

west pilot
torpid lynx
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Config looks fine and it's seeing the OSD chip

west pilot
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yeah i know seems all ok....even soldered the pad for 3-4s ...checked the 2 yellow wires with tester, just don't know what could be wrong. Even tried to roll back to original 4.3.1 and config.

torpid lynx
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If you connect a jumper between the yellow wires on the FC does the video work?

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ie jump video in to video out while connected to the FC

west pilot
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ok will try that

west pilot
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I have video but not osd

torpid lynx
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Yeah, seems like something is wrong with the OSD chip on the FC. I would see if you can exchange it or contact diatone for support

west pilot
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Thanks mate, will see if it works with digital and use another fc for analog (cheap jhemcu)....if not will contact diatone.

west pilot
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very strange stuff, connected a vista and all works fine, video and osd. Will use it for a digital build.

torpid lynx
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Makes sense as the Vista does not use the analog OSD chip.

west pilot
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oh i thought was the same for both

torpid lynx
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no, OSD info for the Vista is sent over MSP via UART connection. Analog video signals pass through the OSD chip to add the overlay.