Questions tagged [reverse-engineering]
The process of taking a completed system and determining details of its design by analysing it; may have legal limitations or ramifications in different jurisdictions.
390 questions
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How can I figure out what pins and what type is this 4-pin connector?
TL;DR
What is the name of the connector in the picture down below, and how can I figure out which pin is TXD and which is RXD considering it isn't written on the PCB and it's too blurry to read ...
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SD758A IC Datasheet Needed (PS2 Controller Microcontroller) — Where to Find?
I’m working on a university electronics project involving a PlayStation 2 (PS2) controller PCB.
The main IC on the board is marked:
SD758A
This appears to be the primary microcontroller/encoder ...
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Speaker repair / unknown inductor/ferrite bead on speaker PSU
I'm repairing a speaker power supply (KEF LSX), and I'm trying to find a replacement for component L802 (see arrow), this is either an inductor or ferrite bead, but I'm not fully sure.
The primary ...
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Reverse engineering KN-9924LB-1-SMT portable lamp
I have 2 "HOROZ" cheap portable LED lamps with heavily degraded battaries that I want to reverse engineer for the educational purpose and also to learn how NOT to design my own LED driver ...
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Understanding SR latch in Silicon (HD74LS279)
I am trying to gain some intuition in silicon reverse engineering. I took a microscope shot of the HD74LS279 chip which implements 4 SR latches. I've attached an annotated image of pins 13 (4Q), 14 (...
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Reverse engineering of Mercedes S-Class rear seat fans part 2: how to correctly send data through DC-LIN?
First part of the research here.
Some news about the progress of my research: the fan is running! Well, almost.
This fan operates on DC-LIN or LIN over Powerline Communication. So I built an ...
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Decreased output current capability of a SMPS
I'm reverse-engineering a SMPS for educational purpose. I had to sort it out, because one day it could not supply my Raspberry Pi 3 Model B+ any more.
First I detected, that the input capacitor C1 was ...
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Reverse engineering of Mercedes S-Class rear seat fans: how to make them work?
I'm new here, so I apologize in advance if I'm not clear. I'll do my best to clarify your questions as soon as possible.
For a professional project, my team and I purchased the rear seats of a ...
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CCFL no identifiers , verified working tube no other visible damage and no other components with issues, voltage detected going in but not going out
This is for a Trimble EZ GPS steering system. Essentially I am struggling to find this part my best guess is its a CTX210605-R but that is discontinued and hard to come by. (Also in the diagrams it's ...
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Understanding H/V sync circuit in RGBHV distribution amplifier
As a hobby project and a way to learn, I'm trying to make a 1x2 RGBHV distribution amplifier. I've got the amplification for the RGB part mostly figured out but I'm clueless on how to deal with the H/...
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Identify RF-IC in SO-8 package marked 5108195 A00 1543 GWA
Our RC controlled roller shutter in front of the window is behaving strangely. I got interested in how it works.
Could you identify that IC? It seems to do the RF stuff.
Open in new tab for full ...
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Would it be worth to replace a MC34063AG with a NCP3063?
Working on a reverse-engineering work related project, one of my tasks is to research potential board optimizations. The board in mind has a DC-DC step-down converter circuit, in which it uses a ...
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Reverse-engineering this electric flyswatter circuit
I recently disassembled this electric flyswatter, and am having trouble turning the PCB into an accurate circuit diagram. I think my diagram is not far off, however I am having trouble understanding ...
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How does the automatic switching function work on Nordic power profiler kit
I'm trying to understand the schematic of the Nordic power profiler kit.
One part I don't understand is the automatic switch part. I even tried to use LTspice to simulate that part, but no luck.
The ...
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Reverse-engineering water detection circuit
I am reverse engineering a PCB in an espresso machine and I am having trouble understanding the water detection circuit used for the steam boiler. The correct water level in the boiler is set such ...
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