Re: FX5200 - no DVI signal
very strange.
very strange.
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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 -
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... -
Good morning.
I have posted here before and have gotten AMAZING advise (thank you!). I'm back for more. This BCaps Sub Forum is so well attended I thought I would post here.
This question is for an automotive application but has to do with what are essentially electrical questions and problem solving... If this is inappropriate I get it. Feel free to delete it or move the question.
The V 12 Jaguar XJS is notorious for overheating in stop and go traffic in hot weather... Y'all will be potentially helpinh a LOT of people. The solutions and directions... -
Hello all,
Working on my first C64 / Breadbin / 250407. Purchased as non-working. Getting black screen.
More detail below, but for those that want to get right to the question.... Here are a few waveforms comparing the Pin15 output on the VIC chip (luma/sync) to the pin 4 on the AV socket (composite signal).
https://imgur.com/gallery/PpqcqPY
My question is: Is the composite waveform range of 0.1v-1v too low for a c64?
More detail:
Symptoms are that that I get... -
Hi everyone,
I'm just starting out with smartphone repairs and picked up a Samsung S21 to work on. Everything functions perfectly except there's absolutely no cellular signal. The SIM card is recognized, WiFi works fine, but zero network signal.
I've tested my SIM in another phone and it works perfectly with good signal, so it's definitely the phone.
From what I've read online, this issue is usually caused by the network chip needing to be desoldered and reballed since one of the solder balls might be cracked.
I think I've located the SOC that...06-27-2025, 01:31 AM
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