Тема: DM800 new tuner HIG003 REV:M (HD channel 8PSK/QPSK Symbol rate 1-45M/S)

[Форумчанин]

              DM800pro HIG003 REV:M  KEY features
multi standard demodulation
Lower signal reception
DM800pro able to receive all HD channel, instead DM500HD and DM800SE.

technical data:

tuner:   BSBE2-801A(DVB-S2)
Symbol rate      
direcTV TM legacy:  20M S/s

??DVB-S:1-45 Mbaud/s, SCPC/ MCPC
??DVB-S2(8PSK):1-45 Mbaud/s
??DVB-S2(QPSK):1-45 Mbaud/s

[Форумчанин]

Всё так как нашол не меняя нечего

Just created a small schematic.

This is the USB power and connection lines and also some measure points.

Both ports have a separate delivery of the 5 volts that comes from the U11.

Just to help others.

Good luck!
Thx Johnny-burrp

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Dm800 U6 regulator

Код: Извините, но гости не могут просматривать ссылки. Регистрация или Логин

So, your LM is fine, it does have 12v and 5v dc but still the dreambox is dead.

Best chances theirs a fault near the U6.
Check the 3.3 and 5 volts, or even the 12v input.

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DM 800 Oled display schematic
Volts measurements, print lines and parts.

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Dreambox death, only two lan leds on.
  U6 and U7 outputs are okey.
 
  Other symptom may, Oled display goes very short on/off by power on the   box, fan is working, the rest is death only two lan lights on.
 
  Possibly U25 defective.