I am glad to hear that you are satisfied with the CD & DVD's results. Next time we meet in a class like this, I will bring along my better equipment.
It is not a SINGLE mistake that I made for wrecking my CD 33, it is a series of mistakes.
I was hoping to change some of the capacitors close to the OPAMP part. Unfortunately, the capacitors feet are like 八字腳. It is really hard to pull the capacitors out and I can't cut them out from the top. Finally, I pulled some of those "rings" out from the PCB.
Then, I hope to fix the error; trying to re-direct the connection to another part of the PCB. I scratched the red paint off so that I can solder onto the PCB directly. I "think" I chose the wrong ground to ground one or two of those capacitors .... ended up burning the big Resistor.
My lesson:
First, don't try to do MODI / DIY when it is late at night OR when you are already tired.
Second, be calm and don't RUSH. Sit down, think and re-think before you try to rescue / recover your errors.
Third, don't be OVER-confident. We can always make mistakes. |