Dear forum participants! Please help! Brought the PS 4 PRO ADP-300CR AA power supply with crooked soldered keys Q3-Q4 and with a hole in half of the IC 32 case, the marking can not be read. If anyone has a diagram or a photo of the Board in good resolution, please share it.
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Kindly somebody share schematic diagram for Sharp 2T-C42EG1X (Board: QPWBNH1 96WJN1 )
Most of the smd resistors were burned
Thanks in advance...09-05-2025, 10:19 AM -
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... -
Hey everyone,
I'm currently working on a mid-70s Sharp Electronic Digital Clock Radio, Model FY-70CH. I found the service manual online, printed it out, and have been studying it for a while. My main reasons for tackling this are: (1) I want to learn electronics and figured I'd start with something I had on hand, and (2) I want to fix its issues. Right now, the radio sounds awful, has about 5V DC at the speaker terminals, and the alarm time setting doesn't work. But I'm not asking how to fix these problems.
Instead, here's what's been bugging me so far:
The schematic... -
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 -
Repair manual part number 702_58300000148618_ara_en_a
It took way too much effort to find this manual so I am sharing it here so the next person can find it easily. Also, I am mad at Bosch for not publishing it on their website, so they deserve to have it leaked....07-14-2025, 07:36 PM