Electronics Repair

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Japanese date codes

I was recently looking through a datasheet for a Sharp IR3M02 PWM regulator and found the following information on date...
4 comments posted 17yrs
posted by fzabkar
4 comments posted 17yrs posted by fzabkar

Counterfeit 2N3055?

I need to buy some '3055's. Is there much risk of getting a counterfeit? I read that because these are so cheap, they a...
10 comments posted 17yrs
posted by me
10 comments posted 17yrs posted by me

HP case on/off switch - sticky

Anyone here have any good ideas to repair a HP computer case ON/OFF switch? On start up, it seems to get stuck behind t...
4 comments posted 17yrs
posted by nomail
4 comments posted 17yrs posted by nomail

IPOD dock

I want to make an IPOD dock, well all I need is the connection. I can buy the connector but I want to make sure I use t...
2 comments posted 17yrs
posted by zekfrivo
2 comments posted 17yrs posted by zekfrivo

tuning manually

hey there can anyone tell me how to tune a sony kv-x2562u television
2 comments posted 17yrs
posted by growconcern
2 comments posted 17yrs posted by growconcern

Re: Toshiba TV model 27A44, Regulated B+ Info

Hi, Note: Now I have the SM. I fixed a lot of TVs over the years that had excessive HV, but this Toshiba is out of the...
0 comments posted 17yrs
posted by bpetria
0 comments posted 17yrs posted by bpetria

Mackie SRM450 popwered speaker

Blown horn - anything to check on , in the way of ultrasonic oscillation as went during normal use? How to break the ca...
11 comments posted 17yrs
posted by diverse
11 comments posted 17yrs posted by diverse

Help! Crackling noise from speakers.

I'm hoping someone can help me! I have a Kenwood KR-9600 with a pair of Pioneer speakers. Recently, there has been loud...
3 comments posted 17yrs
posted by pandorum
3 comments posted 17yrs posted by pandorum

NAD 7020 part id.

I'm servicing an NAD 7020. C414, a 47uF 10V cap has blown up and probably caused some adjacent resistors, R434, R422, an...
2 comments posted 17yrs
posted by farberbear.unspam
2 comments posted 17yrs posted by farberbear.unspam

LCD repair

If this is not the group to post this please forgive. Is there any way to repair nonfunctional rows and columns in LCD...
9 comments posted 17yrs
posted by e_john_wilson.no.spam.
9 comments posted 17yrs posted by e_john_wilson.no.spam.

DENON DVD F100

This DVD Player has two major problems: 1. It fails to read any DVD 2. It loads an Audio CD but no sound. When I load a...
0 comments posted 17yrs
posted by bram.stolk
0 comments posted 17yrs posted by bram.stolk

Incomprehensible industrial schematic

This is a partial wiring diagram for an early 80's (West) German guillotine paper cutter: The goal of this circuit is t...
15 comments posted 17yrs
posted by me
15 comments posted 17yrs posted by me

74HB139 - any info?

Does anybody know what 74HB139 is? It might be SN74HB139, 54HB139 or something like this. 16 pin TSSOP, made by Texas I...
2 comments posted 17yrs
posted by ksi
2 comments posted 17yrs posted by ksi

Help Fixing Television

I'm experienced with electronics but don't know much about TV's. Can anyone help me identify this problem? Panasonic TX...
8 comments posted 17yrs
posted by spam
8 comments posted 17yrs posted by spam