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Linux Based Receivers
Dreambox Support Forum
Dreambox Satellite Receiver | Tutorials | Software
Dreambox 500
DM500s 22khz tone circuit board fix
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<blockquote data-quote="hajduk.sam" data-source="post: 618764" data-attributes="member: 326080"><p>Hi there and thanks for the useful topic.</p><p></p><p>I am in Bulgaria and recently had experienced no LNB power and missing 22kHz tone on two of my three boxes (dm500s-clones). This happens when after arrangement of my system I have cut the LNB cables without power off the two receivers.</p><p>Replacing the Q72 (mosfet) doesn't solve the problem and thanks to this theme I replaced the Q71. With one of the boxes this was enough and it is working fine now. But the second one doesn't - much more I realised that when LNB cable is connected the Q72(mosfet) is extremely hot ... when LNB cable is disconnected measuring of LNB power on the F-connector is OK. </p><p>I will appreciate any advice or opinion shared on my case.</p></blockquote><p></p>
[QUOTE="hajduk.sam, post: 618764, member: 326080"] Hi there and thanks for the useful topic. I am in Bulgaria and recently had experienced no LNB power and missing 22kHz tone on two of my three boxes (dm500s-clones). This happens when after arrangement of my system I have cut the LNB cables without power off the two receivers. Replacing the Q72 (mosfet) doesn't solve the problem and thanks to this theme I replaced the Q71. With one of the boxes this was enough and it is working fine now. But the second one doesn't - much more I realised that when LNB cable is connected the Q72(mosfet) is extremely hot ... when LNB cable is disconnected measuring of LNB power on the F-connector is OK. I will appreciate any advice or opinion shared on my case. [/QUOTE]
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Linux Based Receivers
Dreambox Support Forum
Dreambox Satellite Receiver | Tutorials | Software
Dreambox 500
DM500s 22khz tone circuit board fix
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