Dvr dahua no video
Hello i have same problem with more than 10dvrs power on but no video no sound, can any one help me to find the problem and fix it.
Thank you anyway.
Thank you anyway.
Attached Files
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Hi.
IΒ΄ve been given an old CRT from Panasonic, itΒ΄s almost new, it was storaged and almost not used since bought.
It is imaculate inside, almost no dust or debris inside.
The picture is good, but I have no left sound channel, I tried all the inputs, outputs, even on headphone jack. In AV2 I hear sound from right channel but no image, on tv tuner only right sound channel, the same for AV1.
So I started to look for a service manual, I found one, and started from the beginning.
Most of the times the caps are the problem so I orderer all the caps for all boards,... -
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... -
Hi, I'll tell you the story of this PC.
The PC was repaired because it had a shorted power supply. What happened was that the plastic covering the buffer battery positioned by the manufacturer on the capacitor melted, thus generating a short.
After the repair, the PC worked, I installed Windows 11 and I may have had some problems with the video drivers, but after a bit of tinkering I think I solved them.
However, the PC later presented the problem in the video shared very frequently.
The problem also occurs at startup, in the bios and when using it as a monitor thanks...02-27-2024, 10:17 AM -
Hi guys! I have a problem with macbook pro A1502. This display have a apple video, when launch desktop, this display is off. A connect thunderbolt a monitor, have video and laptop and monitor. Disconnect thunder video power off. Whats problem? π€¦π»*βοΈ thankss -
Hi everyone.
I have the following problem.
I have a Grundig GV-250 VCR which has not been used for over 10 years. When I turned it on, the fuse of the PSU burned out, after being replaced it burned again, I ended up verifying that I had the bridge rectifier and the mosfet in short, I ended up replacing it, and I replaced all the electrolytics of the PSU. However, it started to behave strangely, as I will show you in the video that I will attach as a link.
In short, I ended up replacing all the ICs on the power supply CNY17G, TDA4605, TL431, TDA8137, TL082CP, AN3824K, L2720,...
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