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Tech Head - The Technology Section
The Work Bench and Soldering Station
V-Box blew up :(
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<blockquote data-quote="Vipersan" data-source="post: 915401" data-attributes="member: 325666"><p>So ...2 things to note..</p><p>I hooked up one of the original Gbox transformers ...</p><p>with a simple bridge rectifier and 470uf 63v electrolytic ..</p><p>First checked the voltage OFF LOAD ..</p><p>Like with the torroid ...it was greater than expected</p><p>50V ..?</p><p>So not 36V ...and this would run the cap which fails leaks and bursts in the Gboxes at max ...and borderline tollerances..</p><p>No wonder they fail ..</p><p>A note to every Gbox owner ..</p><p>CHANGE THIS CAP from one fitted rated 50V to one rated at least 63volts..</p><p>If not you are just delaying inevitable failure.</p><p></p><p>Next tried shifting the dish from 1 West to 58 West ..</p><p>First by remote control ..</p><p>The back from 58W to 1W by selecting TPC on the F15 ..</p><p>In both directions there were no errors ..no issues ...no overshoot..</p><p>So it looks like I was right ..</p><p>Running at 24v (slower travel) causes a timeout after which the command issued by remote control or by diseqc 1.2 from the F15 is dropped ..thus the dish overshoots any arc movement initiated greater than 35 degrees ...</p><p>Which equates to approx 60- 70 seconds @24v...</p><p>Time taken from 0.8W to 40W is approx 90 seconds @24v </p><p>So my guess is a 1 minute timer ..</p><p></p><p>Can I fix this ..??</p><p>In truth I do not know..at this point.</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 915401, member: 325666"] So ...2 things to note.. I hooked up one of the original Gbox transformers ... with a simple bridge rectifier and 470uf 63v electrolytic .. First checked the voltage OFF LOAD .. Like with the torroid ...it was greater than expected 50V ..? So not 36V ...and this would run the cap which fails leaks and bursts in the Gboxes at max ...and borderline tollerances.. No wonder they fail .. A note to every Gbox owner .. CHANGE THIS CAP from one fitted rated 50V to one rated at least 63volts.. If not you are just delaying inevitable failure. Next tried shifting the dish from 1 West to 58 West .. First by remote control .. The back from 58W to 1W by selecting TPC on the F15 .. In both directions there were no errors ..no issues ...no overshoot.. So it looks like I was right .. Running at 24v (slower travel) causes a timeout after which the command issued by remote control or by diseqc 1.2 from the F15 is dropped ..thus the dish overshoots any arc movement initiated greater than 35 degrees ... Which equates to approx 60- 70 seconds @24v... Time taken from 0.8W to 40W is approx 90 seconds @24v So my guess is a 1 minute timer .. Can I fix this ..?? In truth I do not know..at this point. rgds VS [/QUOTE]
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Tech Head - The Technology Section
The Work Bench and Soldering Station
V-Box blew up :(
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