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Can you help idenify IC chips? Answered


I am trying to identify 3 IC chips for possible use with the https://www.instructables.com/id/Headphone-amplifier/ project.
They areall from cd drives for old PCs.

3414A
  964N
    JRC
Manufacture by TOP-G
Model #: BCD E520C

565
973
JRC
Mitsumi
Model: CRMC-FX4824T
The headphone piece was seperate of the main board (as well as the next one) and is labeled Mitsumi 74-4602A

5216
 3YB
Matsushita-Kotobuki
Model: CR-563-B
Seperate board label: LMJB0187B

I have had zero luck finding these but I've never had any luck finding IC chips.

Tags:icchips

Discussions

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user
iceng

7 years ago

You did not specify pin count or shape dip, - - -, tqfp, hidden pin, through-hole or smt for each IC of your interest.
Do you know where power and ground show up on the pins.
Any voltmeter measurements in the circuit.
Finally throbscottle wrote a great ible on,
How to reverse engineer a schematic from a circuit board
https://www.instructables.com/id/How-to-reverse-engineer-a-schematic-from-a-circuit/
Very worth looking at.

A

They are all 3 rectangular with 8 pins, i don't don't the rest of that.
I will look at his reverse-engineering on sunday. Today is little 500 in bloomington indiana and working at a liquor store is gonna take ALL my time for the next 2 days

To be honest unless your very good extracting ICs from old cct boards isn't worth it. You need to look to buy new and go for DIP unless your a soldering expert.

The chips may well be remarked by the manufacturer and or specially made fro their purpose.

An LM386 costs less to buy than post to you.

i am no expert at solder and especially unprepared tool-wise for it, but I didn't plan on removing it either. The plan was to do like Millen and use the circuitry that was there, but his proved a lot easier to identify.