Comments on: Easy TV and Monitor Boards Firmware Programming With The RT809H Programmer https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Thu, 17 Apr 2025 10:54:24 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: Jan de Lange https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-449747 Thu, 17 Apr 2025 10:54:24 +0000 https://jestineyong.com/?p=28799#comment-449747 In reply to Albert van Bemmelen.

Hello Albert, nice post! Actually I found the Polish site before I found yours.

I am interested as I was wondering if these cards can be programmed to accept different, low vertical refresh rates of 40-45 Hz. I am looking for a flat panel replacement of a monochrome monitor for my old 8088 Olivetti PC. I haven't been able to find a panel that support this very low vertical sync, so I thought perhaps these cards can be tweaked to accept this frequency.

I also asked the Polish guy, but I haven't received a reaction yet. Do you know what's possible with these cards? Resolution can be low, 640*400 16 colors is the max the Olivetti can output.

Thanks, Jan (NL)

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]]> By: Yogesh Panchal https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398639 Thu, 15 Dec 2022 12:24:37 +0000 https://jestineyong.com/?p=28799#comment-398639 In reply to Albert van Bemmelen.

Albert,
I have USB Programmer CH341A 24 25 Series with couple of attachments & sockets which can handle both 1.8v & 3.3v BIOS IC.But rarely used because most of customers are more interested to buy a new rather get it repaired.

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]]> By: Albert van Bemmelen https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398614 Tue, 13 Dec 2022 17:23:34 +0000 https://jestineyong.com/?p=28799#comment-398614 In reply to Daniel Johnson.

I hope it helps you in programming any board with Bios or other chip too Daniel!

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]]> By: Albert van Bemmelen https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398613 Tue, 13 Dec 2022 17:21:12 +0000 https://jestineyong.com/?p=28799#comment-398613 In reply to Yogesh Panchal.

I guess you also use at least a programmer or two already too Yogesh. For the RT809H I also bought the most interesting parallel socket adapters. Including the 2 RT809H special test boards that connect into the parallel port and the selftest connector on top of the programmer to check if the RT809H is still correctly calibrated and if everything tests okay.

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]]> By: Albert van Bemmelen https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398589 Sun, 11 Dec 2022 21:35:24 +0000 https://jestineyong.com/?p=28799#comment-398589 In reply to Albert van Bemmelen.

Both my Tektronix scopes are now also completely upgraded with special FRAM memory chips. And I also recalibrated my previously fixed second hand 2440 memory oscilloscope. Plus I also bought on Aliexpress a NI compatible GPIB to USB interface which I now am able to make screencopy dumps from my 2440 to my computer.
The free PC tools from John Miles (Ke5fx) support the NI-GPIB interface as if it was Tektronix's own product!

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]]> By: Daniel Johnson https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398588 Sun, 11 Dec 2022 20:29:00 +0000 https://jestineyong.com/?p=28799#comment-398588 Thank You sir

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]]> By: Yogesh Panchal https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398585 Sun, 11 Dec 2022 16:34:41 +0000 https://jestineyong.com/?p=28799#comment-398585 Albert,
You are right a must have tool RT809H....now a days laptop circuits are getting smaller & smaller & each n every section on it are programmed & methods are also vary case to case like in some laptops IO chips are programmed through Keyboard connector.

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]]> By: Albert van Bemmelen https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398572 Sun, 11 Dec 2022 08:06:27 +0000 https://jestineyong.com/?p=28799#comment-398572 In reply to Andrew F. Ali.

Thanks Andrew! I'm very glad that programming these older TV boards and explaining the quick way in how the RT809H deals with programming these Bios chips exists.

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]]> By: Albert van Bemmelen https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398571 Sun, 11 Dec 2022 07:57:37 +0000 https://jestineyong.com/?p=28799#comment-398571 In reply to moshe.

Thanks moshe! Your nice comment is greatly appreciated!

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]]> By: Albert van Bemmelen https://jestineyong.com/easy-tv-and-monitor-boards-firmware-programming-with-the-rt809h-programmer/comment-page-1/#comment-398570 Sun, 11 Dec 2022 07:53:07 +0000 https://jestineyong.com/?p=28799#comment-398570 In reply to Parasuraman S.

I hope it helps you to save some valuable time not having to desolder, reprogram, and resolder the TV bios chips back in Parasuraman next time. Which if I'm not mistaken was what you recently still had to do at your TV service friend's place? Which in that case probably still could have been an older TV not yet supporting the vga to vga or the HDMi to vga programming option.

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