Comments on: No Audio Signal Dreambox DM800HDse Sat Receiver Fixed https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Wed, 12 Nov 2025 12:52:45 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Albert van Bemmelen https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454769 Wed, 12 Nov 2025 12:52:45 +0000 https://jestineyong.com/?p=36268#comment-454769 Here a second sadly no longer working HD-6800 DVB-T2 Firmware download video:
https://www.youtube.com/watch?v=ma5RN54gmPw

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]]> By: Albert van Bemmelen https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454748 Sun, 09 Nov 2025 21:36:49 +0000 https://jestineyong.com/?p=36268#comment-454748 In reply to albert van bemmelen.

Here that youtube video for the HD-6800 receiver that had the firmware upgrafe file that now no longer is given:
https://www.youtube.com/watch?v=Ib5s61ntx_A

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]]> By: Albert van Bemmelen https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454747 Sun, 09 Nov 2025 21:31:45 +0000 https://jestineyong.com/?p=36268#comment-454747 Question to all! I also have a cheap DVB-T2 HD-6800 receiver. DVB-T2 reception works perfectly on all H265 compressedtv channels but the online Youtube channels and other online channels like Meecast fail completely because the necessary firmware upgrade needed to solve the problem was never given. Seller Aliexpress nor now older internet downloadlinks no longer give that about 4.1MB firmware upgrade file. And they never helped to solve the simple easy fixable issue. But the upgrade file was available about 2 years ago on Indonesian and other Youtube videos. Is there anyone who can help me to fix this annoying hardware problem on Jestine's Blog?

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]]> By: albert van bemmelen https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454684 Fri, 31 Oct 2025 14:46:38 +0000 https://jestineyong.com/?p=36268#comment-454684 In reply to Yogesh Panchal.

The RC4558 chip was the only amplifier chip between the Scart audio output pins and the dreambox mainboard circuit. So it had to be defect. Measuring on the still good audio amplifier chip in my second fine working DM800HDse Dreambox confirmed this.
And when checked in a opamp tester it no doubt will show that the old dual opamp was bad.

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]]> By: Yogesh Panchal https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454583 Sun, 26 Oct 2025 15:58:18 +0000 https://jestineyong.com/?p=36268#comment-454583 Albert,
How you confirmed about Op-amp failure?

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]]> By: Parasuraman S https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454573 Sun, 26 Oct 2025 06:11:49 +0000 https://jestineyong.com/?p=36268#comment-454573 In reply to albert van bemmelen.

Glad and sad to read the response! May things get restored soon to continue your fruitful efforts and publications.

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]]> By: Imoud.O https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454570 Sat, 25 Oct 2025 20:15:18 +0000 https://jestineyong.com/?p=36268#comment-454570 "Information is power"so it's said,I applause you for this.Thanks for sharing.

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]]> By: Mark J https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454564 Sat, 25 Oct 2025 18:56:56 +0000 https://jestineyong.com/?p=36268#comment-454564 albert good article . Thank you for sharing.

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]]> By: albert van bemmelen https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454560 Sat, 25 Oct 2025 15:17:17 +0000 https://jestineyong.com/?p=36268#comment-454560 In reply to albert van bemmelen.

And here: https://jb8a8f8.com/support/index.php?forums/schematic-drawings-pcb-images-etc.13/
Much more on this forum for other Dreamboxes too!

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]]> By: albert van bemmelen https://jestineyong.com/no-audio-signal-dreambox-dm800hdse-sat-receiver-fixed/comment-page-1/#comment-454559 Sat, 25 Oct 2025 15:15:26 +0000 https://jestineyong.com/?p=36268#comment-454559 In reply to Tree.

Strange. Try here:
https://jb8a8f8.com/support/index.php?threads/dm7020-rev-npx520e7-3-psu-schematic.129/

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