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#8958 - 07/09/16 09:42 PM DM 7020 YUV-Fix!
Admin Online   content
Japhar Member
Carpal Tunnel

Registered: 10/19/10
Posts: 9518
Hi,
The problem with the image errors in YUV mode is due to a too low capacity of the capacitors at the encoder input of R / C, B, G of the AUDIO / VIDEO SWITCH MATRIX chips (STV6412A).

(Test image 6, which is available under "Settings> System> Image and sound> Test".)

To Fix:
The STV6412A sitting in front of the Scart output.

At the pins 10, 12, 14 (RCIN_ENC, GIN_ENC, BIN_ENC) capacitors C3202, C3302 and C3402 are sitting with each 47nF.

Each capacitor is a 1uF 16V should be soldered on it parallel.

On the direction of the capacitors must be respected.

http://www.dreambox.info/showthread.php?158087-DM-7020-YUV-Fix!











Attachments
1.jpg (29 downloads)
2.jpg (28 downloads)
3.jpg (26 downloads)
4.jpg (27 downloads)
5.jpg (27 downloads)

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#8959 - 07/09/16 09:45 PM Re: DM 7020 YUV-Fix! [Re: Admin]
Admin Online   content
Japhar Member
Carpal Tunnel

Registered: 10/19/10
Posts: 9518
Screenshots





Attachments
YUV-Fehler0.jpg (23 downloads)
YUV-Fehler1.jpg (22 downloads)

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