I AM WORKING ON A WESTINGHOUSE MODEL LTV-32W3 THAT HAS NO SIGNAL FROM BASIC DIGITAL CABLE BUT WILL RECIEVE A SIGNAL ON YPbPr1 and YPbPr2 and AV . WOULD THIS BE A MAINBOARD ISSUE ???.ITS ALSO WORKS ON HDMI BUT ACTS AS IF THE TCONN IS NOT WORKING PROPERLY WITH WEIRD DOTS AND COLORS BUT WORKS GREAT ON ypbpr2. THE CUSTOMER DOES NOT HAVE A CABLE BOX SO THEY CAN ONLY USE THE RF INPUT.
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hello.
Have this ASUS AMD 290X that works but goeas down when put load. one phase not work and have no PWM signal to it. i trace that IR3570B not giving PWM signal. I try to replace it from other card/390x/ but it ot work. i replace driver, mosfets but still the same.
card have identical BV as MSI V308_10 -
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 -
Good morning everyone,
I'm trying to repair an onkyo ht-r390 that has no sound output, despite the volume being at maximum, the rest seems to work; the video output signal (coming from an hdmi input) is present, but the audio is absent. Similar situation if I send an audio signal from any input I have no output.
The firmware reported is the following:
M:1.00/11107BLP
D:?.??/????????
O:1.00/11107AL
The DSP firmware given the question marks seems corrupt.
On the BCHDM-0678 - 25140678 - QPWBCHDM0678A0 board the chip that usually seems...05-11-2025, 02:59 AM -
Anthem MRX500 - no sound
Dear Electronics Experts:
I have the following problem I am trying to troubleshoot. Unfortunately, I have contacted Anthem themselves and even a local distributer but I am not having much luck. Also, I have scoured the internet and unable to obtain a service manual. The Anthem service rep has also replied that he is unable to provide me with any service documentation. I have performed numerous searches on the internet and cross-referenced a few other AV receiver makers (Denon, Marantz, Onkyo) and found certain similarities to block diagram... -
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...