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Radio shack DMM 22-163 - Radio Shack (43-3829) Digital Answering Machine

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I have a multimiter DMM 8903. I made a mistake. I forgot to change from ohmeter to voltmeter.Was a small flame inside and de buzz started.The fuse was not burned. The display is showing ok. I opened the...


unhook any power source from the unit, if you can solder remove that part and take it to any radio shack , or place like that , who supplies electronic parts, and have them give you a suitable replacement , and re-install it,, be sure to check for board burns or bubbling in the line strips. this part is for one or more of the functions of your meter

Jul 12, 2011 | Square D 30 Amp Lighting Contactor W...

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How can you check if a resister is bad


I use the ohmmeter function on my digital multimeter (DMM). You can get a basic DMM from Sears or Radio Shack for about $30.

First, (safety check) measure the voltage across the terminals unless you know there is no power in the circuit, or better yet, disconnect the resistor so other components don't give you a false reading. Attempting to read the value of a resistor in a live circuit will give you a meaningless number at best, and may severely damage your meter at worst. It could also damage other parts in the circuit.

Now switch your meter to the lowest ? range (Greek capital Omega, for Ohm) greater than the expected value of the resistor. Connect one test lead to each end of the resistor. The number you read should be the expected value plus or minus the tolerance (e. g., a 100 ? 5% resistor should read somewhere between 95.0 - 105.0 on the 200 ? range.). A bad resistor will usually show up as 1___ (over-range) because it will be burned out and open. Some very old carbon composition resistors will short (read much less than 1 ?) when they fail.

Often, a visual inspection will identify a bad resistor - if you can see that it's burned and broken, it's bad and further testing is unnecessary. The ohmmeter is for all the other cases.

Nov 19, 2010 | 2005 Dodge Caravan

1 Answer

Need a manual for radio shack 21-1936 walkie


The 21-1936 was made for Radio Shack by Uniden and is identical to the Uniden GMR-1038-2
The Uniden version of the manual is available HERE

Dec 26, 2009 | Radio Shack 21-1926

1 Answer

I NEED A DIAGRAM TO HOOK A NEW PLUG FOR A RADIO


we need to know what kind of mic are you hooking to it?

Dec 19, 2009 | Radio Shack TRC-447 CB Radio

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How do you install a jvc cd player in a 95 carolla is the colors the same


Most new radios have a diagram or wiring scheme that tells you which wire goes where. Usually there are 2 power wires(one goes to ignition wire and the other to the battery B+ wire). Then there are the Power antenna and Ground wires. Once you have these in place you can figure out the speaker wires. #1 You need a DMM (Digital Multimeter), wirecutters, wirenuts, lineman pliers and electric tape. #2 There are only 2 wires that should put out a voltage. So set your DMM to DC voltage at 20 voltage range. (If your battery is 24V set your DMM to next highest range.) Connect the black test lead of your DMM to ground(usually a black wire). Connect your red test lead of your DMM to all of the dash wires ONE AT A TIME until you find ONE that puts out a voltage of approx. 12 V. That is your Battery B+ wire. Mark it and set it aside. Now to find the ignition wire. Note that your ignition wire will not put out a voltage until you turn the ignition ON. So turn ignition ON and find it by connecting blacl test lead of DMM to ground wire and the red test lead of DMM to each of the remaining wires until you read 12 V. Be sure to double check by reading both wires while ignition ON and OFF. Mark the Ignition wire and set aside. #3 Now that the wires that put out a voltage are out of the way, set your DMM to Continuity Tester. This test is done with power off(no more power emitting wires anymore remember). This test checks for continuity or a path which current can flow through. It does so by 'BEEPING' when the leads are connected to both ends of a connecting wire. So start checking the wires by connecting black lead to one wire and red to another wire. Mismatch until you find two that will make a beep. That pair of wires connect to a speaker. Band the pair together and find 3 more pairs. Those four pairs are the wires to the four speakers in your car. #4 You can now make the proper connections using the wiring scheme on the radio. So far you can connect the ignition wire and the battery wire. Theoretically if you were to turn on the ignition power is going into the radio but the negative/ground needs to be connected for the power to flow. Other than the other 8 speakers wires there should only be 2 wires remaining coming out of the dash. One would be the ground and the other the power antenna. With the ignition on and the radio turned on tap the power antenna wire from the radio to one of the 2 remaining wires. Taping the ground would not power the antenna but taping the power antenna wire will. So find out which is the power antenna by quickly tapping it. Most ppl would not recommend this type of testing. Make proper connections once finding which is which. #5 At this point the wiring scheme on the radio tells which pair of speaker wires is for which of the four speakers in the car. 1) rear right; 2) rear left; 3) front right; and 4) front left. With the ignition on and the car radio on take any pair from the radio and soft connect to a pair on the car. One of the speakers will play. Note which one and find its coresponding connection on the wiring scheme. Do two more in the same manner which would only left one on the car and one pair on the radio. #6 Remember to make good connections using the linemans pliers to twist the wires tightly together. Plus secure all connections with wire nuts and to be safe also secure with the electric tape. Try to keep wires neat and secure. I hope this helps. =)

Oct 10, 2009 | Car Audio & Video

27 Answers

2wire 2701HG-B power light red


A sony psp power supply has the same specs and is a lot cheaper than R/Shack Got mine on E-Bay for under 4.00!!!!!!!!!!!! with FREE shippiong

Jan 02, 2009 | 2wire 2700HG-B Router (2700HGB)

1 Answer

Antenna for radio shack pro 2018


Hello, Radio Shack would be the first place i'd try for a replacement. Mechanic

Oct 09, 2008 | Radio Shack Pro-2018 Scanner

1 Answer

MGA CS-2657R/2658R


Journeygal,
Check The Following Components Off Ihvt pin 3 For Open: R558 P/N 103p338010, D 553 264p338010, L502 321c030010, R521 1.2 Ohm You'll Need A DMM For The Job And Any Cheap One From Radio Shack Will Work.
Bill

Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993
premtech@willapabay.org

Sep 28, 2008 | Mitsubishi WS-55807 TV

1 Answer

Mount for Radio Shack Pro-2051...


Any radio store should have them, try radio shack or www.walcottcb.com

Jul 06, 2008 | Radio Shack Pro-2051 Base Scanner

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