Hello everyone,
I got an very old Philips IC S87C751 that I would like to dump; unfortunately due to its old age this IC is of course not in the list for the RT809H.
Is there anyway to add this IC manually? My experienced with the RT809H programmer is still quiet limited.
I do see there is an CFG directory in the application folder but so far I haven't been able to find any generic instructions for setting it up.
Hope someone can help!
Thanks!
Datasheet: [url]https://pdf1.alldatasheet.com/datasheet-pdf/view/1590...
xf0439
New Member
Last Activity: 05-16-2023, 06:30 AM
Joined: 02-05-2021
Location: Barcelona
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RT809H - Old Philips IC S87C751 (80C51)
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Re: Acer ES1-571 Winstron no display
Already tried but there was no indication of any difference; on this MB there is no buzzer nor LED unfortionately.
I hope is there will be anything useful trough the LPC interface but the connector is unpopulated and I don't have any suitable connector or ribbon cable to solder to it :/ -
Re: Acer ES1-571 Winstron no display
Anyone any more suggestions what to check?Leave a comment:
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Re: Acer ES1-571 Winstron no display
There is not really anything to see; the screen remains black it's just the black with the backlights powered. I mentioned this to indicate (also confirmed it by measuring) that all the power to the display itself is correct.
The fan turns on for a few seconds and then turns off; once in a while it spins up when needed / as it would do in a normal working situation....Leave a comment:
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Re: Acer ES1-571 Winstron no display
The issue seems to be similar to: [url]https://www.badcaps.net/forum/showthread.php?p=886122#7[/url]
and I have asked the author of that topic @DeniS182 if he ever managed to resolve his problem.
Since most has been ruled out I suspect it's the processor. I have ordered one of those PCIE debug cards as a 'last resort'; in the hope it will still find somethingRe: Acer ES1-571 Winstron no display... /> and I haveLeave a comment:
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Re: Acer ES1-571 Winstron no display
Thanks for your message!
A: Visual inspection: I have inspected it again and all looks in great state.
B: CapsLock test: No response at all (there is power on USB ports).
Any other suggestions?Leave a comment:
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Re: Acer ES1-571 schematic
Did you ever find the problem?...Leave a comment:
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Acer ES1-571 Winstron no display
Hello all,
I have an ES1-571 here with no display, hdmi out or boot.
Mobo = Wistron Domino_BH
When pressing the power button the LED, fan and backlight turn on.
Fan behaves as it would in normal situation.
All power stages seem good; resistor for internal GPU enable is there.
Have tried several cleaned bios versions online and later cleaned the original myself but did not make any difference.
Any suggestions?
Schematic here: [url]https://www.badcaps.net/forum/attachment.php?attachmentid=192065&d=1552... -
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