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Tech Head - The Technology Section
The Work Bench and Soldering Station
Old dig. EchostarDSB1000Ci2 ... absolutely dead?
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<blockquote data-quote="nopfusch" data-source="post: 129451" data-attributes="member: 195487"><p><span style="color: black">Hi</span></p><p></p><p><span style="color: black">My now > 7 Year old dig. receiver is on strike or nearly dead. </span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">Hi</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">My now > 7 Year old dig. receiver is on strike or nearly dead.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">I switched the other day the receiver on and as no picture came, I saw an "Err" displayed at the receivers LCD display - an Error signal.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">After a while I discovered no power for the LNBs (zero Volts at C and Ku Band and irrespective of polarisation).</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">I'm in electronics (but not UHF), so I opened the receiver for the 1st time.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">I discovered soon that the switched mode power supply (PS) switches off.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">The sequence is like that: switch mains on</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">the scan for a signal starts but after 2-5 seconds "Err" comes on. If you leave it, the display changes to time, like you switch the receiver with the remote off.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">The time works.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">As with TVs, the PS waits apparently for a feedback signal to continue with the operation. As it looks, this his signal is missing and the PS switches therefore off. Only the supply voltage for the clock remains on (separate +5V supply).</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">The supply to the LNBs is going via a relay and via a series transistor to the tuner. Both are in order. The transistor is controlled from a large chip, most probably the CPU (controlling processor unit) and from there is also no signal.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">The relay gets a very short signal to the coil, but then the PS switches off.</span></span></p><p><span style="color: black"></span></p><p> <span style="color: black"></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">What I need is a circuit diagram (schematics), or better the service manual. I bought the receiver more than 7 Years ago in Munich, during a trip to Europe.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">The best source would be a web address, where I could download these.</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">Or a postal address. I think after 7 years, Echostar wouldn’t mind that I get a copy. Of course with a current marketed receiver, it would be another story.</span></span></p><p><span style="color: black"></span></p><p> <span style="color: black"></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">Anyone having some info for me, please?</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">Thanks & Regards</span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">Nopfusch</span></span></p><p><span style="color: black"></span></p><p> <span style="color: black"></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="color: black">South Africa </span></span></p><p><span style="color: black"></span></p><p><span style="color: black"><span style="font-family: 'Verdana'">3.6 m dish with GLOBO positioner, California Feedhorn with mech. Polarizer, C- and Ku- Band LNBs, dig. Echostar DSB1000Ci2 (but dead) and analogue receiver.</span></span></p><p><span style="color: black"></span></p><p> <span style="color: black"></span></p><p><span style="color: black"></span></p><p><span style="color: black"></span></p></blockquote><p></p>
[QUOTE="nopfusch, post: 129451, member: 195487"] [color=black]Hi[/color] [color=black]My now > 7 Year old dig. receiver is on strike or nearly dead. [color=black]Hi[/color] [color=black]My now > 7 Year old dig. receiver is on strike or nearly dead.[/color] [color=black]I switched the other day the receiver on and as no picture came, I saw an "Err" displayed at the receivers LCD display - an Error signal.[/color] [color=black]After a while I discovered no power for the LNBs (zero Volts at C and Ku Band and irrespective of polarisation).[/color] [color=black]I'm in electronics (but not UHF), so I opened the receiver for the 1st time.[/color] [color=black]I discovered soon that the switched mode power supply (PS) switches off.[/color] [color=black]The sequence is like that: switch mains on[/color] [color=black]the scan for a signal starts but after 2-5 seconds "Err" comes on. If you leave it, the display changes to time, like you switch the receiver with the remote off.[/color] [color=black]The time works.[/color] [color=black]As with TVs, the PS waits apparently for a feedback signal to continue with the operation. As it looks, this his signal is missing and the PS switches therefore off. Only the supply voltage for the clock remains on (separate +5V supply).[/color] [color=black]The supply to the LNBs is going via a relay and via a series transistor to the tuner. Both are in order. The transistor is controlled from a large chip, most probably the CPU (controlling processor unit) and from there is also no signal.[/color] [color=black]The relay gets a very short signal to the coil, but then the PS switches off.[/color] [color=black] [/color] [color=black]What I need is a circuit diagram (schematics), or better the service manual. I bought the receiver more than 7 Years ago in Munich, during a trip to Europe.[/color] [color=black]The best source would be a web address, where I could download these.[/color] [color=black]Or a postal address. I think after 7 years, Echostar wouldn’t mind that I get a copy. Of course with a current marketed receiver, it would be another story.[/color] [color=black] [/color] [color=black]Anyone having some info for me, please?[/color] [color=black]Thanks & Regards[/color] [color=black]Nopfusch[/color] [color=black] [/color] [color=black]South Africa [/color] [font=Verdana]3.6 m dish with GLOBO positioner, California Feedhorn with mech. Polarizer, C- and Ku- Band LNBs, dig. Echostar DSB1000Ci2 (but dead) and analogue receiver.[/font] [font=Verdana] [/font] [/color] [/QUOTE]
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The Work Bench and Soldering Station
Old dig. EchostarDSB1000Ci2 ... absolutely dead?
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