This unit works perfectly when it wants to come on. Once it comes on, will run forever. However, there are times it will not start. If I cycle power enough times, the unit will finally come on. Does not matter, remote or local on button, same result. Should I be looking at smps or main? I tried heating different sections of both boards..no difference. I have 12 volts and 5 volts..one pin reads 4.2 volts..very strange. Nothing labeled as far as voltagees or functions of the conductors. Pictures coming.
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Re: Element ELCFW329
With something like that, we always need the pin out name with the measurements on the PSU connector between it and the main board, while not working and while working. In your case I think you have 2 connectors we need measurements from. Look at SJ, they sell an EEPROM if your problem fits their description. -
Re: Element ELCFW329
No connectors are labeled..I will have to measure when working and not working to see what is disappearing voltage wise.Attached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Element ELCFW329
It is the UF11 Eprom on the main board..labeled 25q16bsig..appears to be a flash memory chip..I can heat it and then press chan^ and vol down and it starts until the chip cools off.
Found the IC, 5 for $4 from china..go figureComment
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Re: Element ELCFW329
no surprise... glad you found it!Comment
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Re: Element ELCFW329
SJ sells them for $15..Do you think that is because they are programmed or does it just function as a flash memory chip as installed?Comment
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I am trying to repair an LG split AC indoor unit, which does not start and gives a CH05 error code.
This indicates an error in the communication between the outdoor and the indoor unit.
The outdoor unit is fine, so the problem is the indoor PCB.
The indoor unit is an LG PC09SQ NSJ (3SNM09JA2FA), and the PCB has the following type number: EAX35907219-1.2 (see photo1)
I changed optocouplers ICO1X & ICO2X and the NPN transistor S9013 which drives optocoupler ICO2X (see photo2), but this did not remedy the fault.
Does anybody have the schematics of this board,...02-01-2025, 12:55 PM -
There is a motherboard Gigabyte H610M S2H V2 (DDR5), I can't find boardview
Help to identify the element, marking on the element - C31PH. It stands next to the USB 3.0 and it looks like it is ESD Protect chip. We need a datasheet to this element. Maybe someone has already identified such an element. Help please.
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Hello everyone,
I'm turning to the Badcaps community to help me troubleshoot the radio Rx card from my (old) garage door opener. While I could just ditch that card and replace the whole system, I first would like to understand "why" it suddenly stopped working, because that's just how I am wired...!
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I have finished my work. The new lights come on except the one for stereo, I reversed the bulbs to no affect, anyway, the unit powers on, relay clicks. I have no DC voltage in speaker outputs, I also do not have any AC in the speaker outputs. There is some faint crackling in the speaker. This unit cranks up loud so I had the volume on very low. Everything seems to be fine but I can't really check the switch until I can get sound out of the outputs. I was going to do caps for the power supplys and the tone board but thought if it was cranking loud at one time maybe just leave it alone until it...
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I've got this circuit that I've been playing with on a breadboard. I'm not happy with it mainly because the MOSFET gets too hot and generally controlling the temp of the heating element with the Arduino has proven to be a little more cumbersome than I would like.
What I would like to know, is what is the best way to set up a circuit like this? The heating element is just a PCB and its going to be mounted under a 3D-printed enclosure that a lizard will use to warm his belly.
This is the general setup that I have now.
This is what the...
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