Re: First reset signal on computer, how to work !
Thanks !
Thanks !
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Regards, Geert -
Re: First reset signal on computer, how to work !
Thanks !Comment
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Re: First reset signal on computer, how to work !
Thanks!Comment
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Re: First reset signal on computer, how to work !
This is very helpful for a noob like me! Thank you so much for your times posting!!Comment
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Re: First reset signal on computer, how to work !
Hello, interesting guide. Thanks for your time.
As for it, what do you mean when you say high? I understand that low refers to a voltage, for example 3.3V of +3VS...
When you say high, do you mean that there should not be a voltage or that it should exceed what is understood as a normal value? Excuse my ignorance, I'm just trying to understand your guide. Thanks again :chulo:Comment
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Usually a reballin/missing pad issue under the pch/fch. That signal come out from the chipset and pass through the crystal, then goes inside again. Well that or the crystal is broken. This on the other hand happen when too much heat is applied, usually after a reballing/chip replacement, process.Comment
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I'm troubleshooting a Philips MDP 3380/12 Blu-ray player that shows no signs of life. The display remains off, and no buttons respond.
Inside, the power supply is working correctly, and all expected voltages on the mainboard match the service manual specifications. The CPU warms up slightly (checked with a thermal camera), the crystal oscillator is functioning, but the reset signal remains high at all times.
The reset circuit appears to consist of two NPN transistors, one driven by 5V VCC and the other by 3.3V STBY, as shown in the attached schematic. Should the reset... -
Hi everyone, over the past few months i have taken a deep dive into motherboard diagnostics and I love the challenge. Currently im trying to learn all about the signals that travel around the motherboard, such as frequencies, enable signals High and Low logic states etc. And i have been learning to read and using the Schematics for this board that i requested here on Badcaps forum, from a few months ago, this is such a great place for these.
I’ve been working on a GA-970A-DS3 (rev. 1.0) that does not post. This motherboard has been my main learning board. I would like share...11-23-2023, 11:02 PM -
Hi! I'm back again... so I solved my previous issue but now it's back with a vengeance...
First, history... previous issue was dead motherboard, blinking power LED, no fan spin nor LED backlight, which was caused by a missing SLP_S5#. This was fixed when I replaced the RTC crystal.
Which brings us to the present. The screen started glitching every other 2 seconds. The screen corruption looks like the horizontal pixels/scan-lines are being shifted to different spots. This also happens on the BIOS setup. So I thought, "Okay, this might be my LCD since the thing has...10-06-2024, 09:44 AM -
Failure Symptom
No picture, just red vertical stripes. Google search shows quite common problem for these recent Vizio M series although red vertical stripe pattern may differ. Some call it "Netflix" boot screen haha.
Where is the short?
Panel has 4x buffer boards. Quickly found the 1/4 panel buffer board with the problem by selectively disconnecting buffer board flex cables.
Having recently fixed another Vizio with similar symptoms that was a shorted ESD diode array ( link ) Probed the ESD diode array but... -
Micron MTFC2GMDEA-0MWT, MTFC4GLDEA-0MWT, MTFC4GMDEA-1MWT, MTFC8GLDEA-1MWT, MTFC16GJDEC-2MWT, MTFC32GJDED-3MWT, MTFC64GJDDN-3MWT are a communication and mass data storage device that includes a Multi Media Card (MMC) interface, a NAND Flash component, and a controller on an advanced 11-signal bus, which is compliant with the MMC system specification. Its low cost, small size, Flash technology independence, and high data throughput make eMMC ideal for embedded applications like set-top boxes, digital cameras/camcorders, digital TVs, and a variety other consumer products.
The nonvolatile...10-07-2024, 04:55 AM
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