When I press the power button the Visio name switches from amber to light blue but there is no picture or sound. I pulled the back panel off to get readings at the PSU and found that Va=111.4 V(suppose to be 54 V) and Vs=436 V(Suppose to be 207 V) with the power on. I couldn't find Vsc or Ve to take their readings.
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I am facing a strange issue, I don't have any sound over my internal MacBook speakers and also the video won't start. If I change to my head speaker or via HDMI (speaker on my external Display) the sound works over the head speaker or Display and also the video starts (ex. youtube).
All happened after the battery ran out of power overall several days when I was on vacation.
I tried to remove the battery and then reconnected the battery, and then the MacBook Pro 14 2021 won't accept any power from my power socket. Then I removed one speaker, connected again the battery... -
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 -
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I have a Vizio D32f-E1 LCD TV that does NOT have a TCON board.
This TV recently went through some 'death throes' and now won't boot. The first problem that began to manifest was while watching tv, the screen would 'freeze', and the image would dim over a few seconds until it was very dark. HOWEVER, the audio of the show would continue as normal. I could power off the TV for 5-20 seconds, power back on, and the video would be normal. This would occur 1-3 times when the TV was first started, and would not happen again after the TV was 'warmed up'. Not ideal, but this glitch was manageable.... -
I have a Vizio P502ui-B1 4K Led TV.
It was working fine until one day the picture went out. When the picture first went out, it had some sporadic sound.
Now when you try to power it on, the power light comes on and fades away but that is it. There is no picture or sound.
I tried the flashlight test, but didn't see anything.
I opened up the case, but didn't find anything of interest. The boards all look to be in good condition, the fuse on the power board looks ok (when researching there were references to other fuses, but I only saw...
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