netgearnetgear
Member
Last Activity: 11-24-2024, 03:43 PM
Joined: 03-02-2022
Location: Port of Spain
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Hello everyone, I wanted to inform you that the board repair was successful. Additionally there were some cracks on the solder joints of the relay pins. The remote gate works fine. Thank you for all your assistance and recommendations...cheers -
When I applied 10v (1.5A) at the input (pin1) of the 78m05 regulator chip the current drawn by this part of the circuit is around 287mA at 10v. All other checks on the board tests OK. I will now attach the board and tests it on the remote gate and let you all know how it goes....thanks...Leave a comment:
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Apologies....it's actually 42 ohmsLeave a comment:
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Good day, the resistance on the 5v rail is 19 ohms....Leave a comment:
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Your comments are noted. Will do and provide an update asap. Thanks again...Leave a comment:
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D747m_1v3 logic board for remote gate
Good day,
My remote gate stopped working. The company said the main logic board needs replacement. After examining and running a couple of tests, I discovered what looks like a shorted zener diode. Tracing the path on the board it appears to be across a voltage regulator chip (78m05). After reviewing the datasheet for the voltage regulator I thought that it was being used with a zener diode as a voltage boost regulator. However, looking at the layout of the board the "shorted diode" is not connected as in the datasheet. The diode does not have a markings so I am not sure what... -
Thx for your advice...
Update:
Voltages on capacitors:
pc239 : pin1 - 5.116V, pin2 - GND
243 : pin1 - 5.116V, pin2 - GND
244 : pin1 - 5.116V, pin2 - GND
246 : pin1 - 1.908V, pin2 - 6.527V
242 : pin1 - 1.879V, pin2 - GND
248 : pin1 - 5.117V, pin2 - GND
245 : pin1 - 4.810V, pin2 - GND
247 : pin1 - 1.879V, pin2 - 802mV
Voltages on Chip (MP1475DJ-LF-Z)
Pin1 : 4.762V
Pin2 : 5.115V
Pin3 : 0V
Pin4 : 0V
Pin5 : 6.527V
Pin6 : 3.032V
Pin7 : 4.810V
Pin8 : 811.7mV​
...Leave a comment:
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After heating the components in this area one by one, I was able to single out a resistor that when heated the board turns ON when I press the power button. I will measure it when the board is working and also when it is not. Will possibly look to replace it and let you know.Leave a comment:
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Hello, I measured the voltage and it is 1.796 volts.Leave a comment:
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Asrock a320m-hdv motherboard not turning on
Good day members,
I have a asrock a320m-hdv motherboard that does not turn on. This weird thing is that it turns ON when I heat the motherboard in the vicinity of the m2 slot with a blow dryer. The there is a capacitor and resistor in parallel that has a voltage of 1.79v and 819mV on either ends. When I heat the board and it turns ON, the voltage is 1.79v and 803 mV. It turns OFF and ON normally if I wait a few minutes. On the other hand if I wait for an hour or more it does not turn ON anymore. I have to heat that area again and then it works. I noticed slight heat for example from my... -
Re: Biostar motherboard A10N-9630E schematic and boardview request
BTW, I already did a bios reset but still no luck.Leave a comment:
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Biostar schematic and bios request (A10N-9630E)
Good day,
I am currently searching for a bios update and a schematic for this the Biostar motherboard model A10N-9630E.
Any assistance would be greatly appreciated.
Kind regards. -
Biostar motherboard A10N-9630E schematic and boardview request
Good day members, hope everyone is doing well.
I am looking for a schematic and/or boardview for the Biostar motherboard model "A10N-9630E". I have this board that fails to boot.
The power supply is fine - All voltages pass with multimeter.
3.3V is present at the Power ON pins of the board
I think both the North and South Bridge are integrated in the Processor.
I will get another memory stick and see if the board boots.
I have disconnected all drives and peripherals while conducting these tests.
Any suggestions are welcomed.... -
Re: JVC 40" LED TV (LT-40KC385) - Turning ON sometimes (stuck on loading, menu etc.)
Noted....regardsLeave a comment:
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Re: JVC 40" LED TV (LT-40KC385) - Turning ON sometimes (stuck on loading, menu etc.)
Hello, the voltage is on the power connector pin. See pic attached. O.32V when the TV is off and 2.98V when the TV is on.
Update: I reflowed the NAND chip, however, it made no difference....Leave a comment:
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Re: JVC 40" LED TV (LT-40KC385) - Turning ON sometimes (stuck on loading, menu etc.)
Ok..thanks. I measured the caps in diode mode around the eMMC (NAND Chip) but none are shorted, so is it safe to assume that the software is corrupted? Do you th8nk I should still reflow the RAM chip?Leave a comment:
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Re: JVC 40" LED TV (LT-40KC385) - Turning ON sometimes (stuck on loading, menu etc.)
Yes....Leave a comment:
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JVC 40" LED TV (LT-40KC385) - Turning ON sometimes (stuck on loading, menu etc.)
Hello esteem members,
I have a JVC Television that fails to turn ON sometimes. The stand-by red light is always on. When the TV turns on the the JVC logo displays then the TV attempts to scan for local channels...it then freezes. If I unplug it, then it refuses to turn on - stand by light on. The power supply input voltages are present - 12V, with the backlight 0.32V when the TV refuses to turn on. Backlight voltage is 2.98V when TV does turns ON. All regulator chip has 3.3V on pin 8. Processor voltage - 1.02V, Ram - 1.5V. I am thinking about reflowing the on-board RAM. When the TV was... -
Re: Boardview xbox 360 , xbox fat , xbox one x and xbox one s
Good evening, my son's xbox360 has the ring of death.
So far I have disassemble the console with the intention of
repasting as well as a general cleaning. If that doesn't work then I will reflow the gpu.
This is where I want to get a better understanding of how the board works
I wish to thank you for sharing these boardviews.
Best regards.Leave a comment:
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Re: Laptop battery charging circuit
Wonderful post. I had a low battery warning recently on a hp 14-018la laptop. Turns out it was the battery that needed to be replaced. ThanksLeave a comment:
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