DM500s 22khz tone circuit board fix

Llew

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Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
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It's an FDN358 MOSFET (as shown on the schematic posted above).
 

ambu

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oman
pls can any one give me part nos of q72 q71 q70 can i put a cross wire to these 3 transistors and how or better to replace them thx
 

mark4fs

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Can anyone tell me where I can buy these I had voltage from tuner but only had 20% and no agc and high ber8600 led for 22khz wasn't lighting up I tried a link from q72 to led and got it to light up but must have shorted it coz it then burnt out I know q71 is a bc817 there's some on fleabay seems like this problem is very common so if we can all bang heads together might save chucking these boxes in the bin I have smt soldering abilities and tools so want to try and fix this just like the guy who started thread so hopefully we can help others
 

Llew

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Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
My Location
The Flatlands of East Anglia

BMOE

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Yes, sorry about that.
Here is the real link:
=http://lakebransh.blogspot.com/2011/03/dm500s-lnb-problem-fix.html

/Matias
 

Llew

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Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
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The Flatlands of East Anglia
Thanks on behalf of anyone experiencing the same problem. Just be sure the capacitors are good quality and high temp. rated (105C), or it'll be back to the soldering iron later.
 

BMOE

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Today I fixed another one by changing the capacitors and now it works just fine.
 

pacmyc

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Hello. I just received a brand new (but faulty) DM500S from DX.
I opened up the cover and saw that a small coil is broken, it's right next toL704.
Do you know the specs of this component? It shouldn't be difficult to find if I know the specs.
And also, Im, facing the problem that Gemini Project 4.7 doesnt find the tuner, could it be because of this coil?IMAG0124.jpg
 

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