HuaQin NB6200 diagram attached.
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Hi All,
I obtained a schematic diagram for the above mixer but I am wondering if a block diagram exists as I am trying to fix a problem in the protection circuit which I find a little confusing using a circuit diagram only. In the good old days the workshop manuals always had a block diagram with a circuit discription. Very useful for fault finding.
The protection light is perminently on. The right sode has a -80DC on the feed to the speaker, hence the protection led on. I have removed all the O/P transistors which checked out OK. I tested all other transistors in circuit which seem... -
hello everyone, I'm looking for the wiring diagram of this led monitor.
the model is DHI-LM19-L200, but I think that any other diagram of a DAHUA monitor could be equivalent.
I really hope that among you someone can help me to repair this monitor, the screen is black, it doesn't seem like a backlight problem.
I see the presence of 12 volts, 5 volts, but without a diagram the repair is very difficult.
thanks to those who will answer12-10-2024, 04:37 PM -
Computer in question : Razer Blade 15 2020 Base Model
Model# RZ09-03286E22
BIOS CHIP: WINBOND W25Q128BV
What I'm trying to accomplish:
I want the computer to properly boot with an external display with the attached display disconnected from the motherboard. I have a CH341A programmer and full capability of modifying the BIOS easily. I Have tried various setting changes to no Avail.
What I've tried thus far: Too much to note and I really dont remember everything I changed but here it goes.
W/Stock BIOS - 1.06:
Disconnect the... -
Hi, i have a hotair station LK852D-2 , and the problem is about the air flow is little and hardly to getout any air flow from it, i unfurtanitly replaced the potinmeter 500k ohm with new one, but it never solved the problem, and then i unsoldered from the board as you can see in the attached photo, and that make Some parts of the circuit diagram been damaged, and I need someone who has the same circuit diagram to provide me same photo of the diagram, especially the place where the 500 kΩ potentiometer switch is located( the place of 500k ohm potentiometer is indicated it with red arrow in the... -
Hi, i have a hotair station LK852D-2 , and the problem is about the air flow is little and hardly to getout any air flow from it, i unfurtanitly replaced the potinmeter 500k ohm with new one, but it never solved the problem, and then i unsoldered from the board as you can see in the attached photo, and that make Some parts of the circuit diagram been damaged, and I need someone who has the same circuit diagram to provide me same photo of the diagram, especially the place where the 500 kΩ potentiometer switch is located( the place of 500k ohm potentiometer is indicated it with red arrow in the...09-11-2025, 07:47 AM