how to test relay from jbl amplifier?

Home / the12volt's Install Bay / Relays / how to test relay from jbl amplifier? (

Topic Closed)

Welcome Guest :)

Members

< Prev Page Next Page > < Prev Topic Next Topic >

craig155

Member - Posts: 37

Joined: April 19, 2009

Location: United Kingdom

Posted: April 27, 2009 at 3:47 PM / IP Logged

With the red lead on the case and black lead to the right leg I am not getting any reading.

Red lead on case,black lead on left leg i am not getting any reading.

craig155

Member - Posts: 37

Joined: April 19, 2009

Location: United Kingdom

Posted: April 27, 2009 at 4:01 PM / IP Logged

I checked the board, red lead in centre hole and black lead in left hole and got a reading 1100+.

Putting the black lead in right hole getting reading 1100+

i am an idiot

Platinum - Posts: 13,714

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: April 27, 2009 at 4:16 PM / IP Logged

Those outputs are fine. Put them back in the board. On an N channel FET, red lead on case will give no reading at all. Black lead on case, red lead on right leg should read around .400 to .600 depending on your meter. Once you check the left leg with the red lead, it turns the transistor on and then if you recheck the right leg, it should read much nearer .000 ..040 to 180 depending on the transistor and your meter.

craig155

Member - Posts: 37

Joined: April 19, 2009

Location: United Kingdom

Posted: April 27, 2009 at 4:21 PM / IP Logged

So does that mean the transistors are ok then?

How do i test the small resistor at the base of the transisitor?

craig155

Member - Posts: 37

Joined: April 19, 2009

Location: United Kingdom

Posted: April 27, 2009 at 4:27 PM / IP Logged

With transistor turned on,right leg shows 128 on one and 508 on the other.

i am an idiot

Platinum - Posts: 13,714

Joined: September 21, 2006

Location: Louisiana, United States

Posted: April 27, 2009 at 4:33 PM / IP Logged

Those outputs are fine. Put them back in the board. What are the colors of the bands on the resistor? With your meter set to Ohms, one lead on one end of the resistor, other lead on the other end of the resistor, notice the reading on the meter. Also notice if there are any letters displayed on the meter. K or M specifically.

craig155

Member - Posts: 37

Joined: April 19, 2009

Location: United Kingdom

Posted: April 27, 2009 at 4:40 PM / IP Logged

with meter set to 2M (Ohms) getting a reading of 0.98.

it is a carbon film 1/5 wj 100 Ohm resistor

i am an idiot

Platinum - Posts: 13,714

Joined: September 21, 2006

Location: Louisiana, United States

Posted: April 27, 2009 at 4:46 PM / IP Logged

Does your meter have a 200 ohm setting? If so set it there and check it again. But from what I am gathering with the meter set to the 2Meg scale. I would assume that the resistor is reading 98 ohms.

craig155

Member - Posts: 37

Joined: April 19, 2009

Location: United Kingdom

Posted: April 27, 2009 at 4:49 PM / IP Logged

with it set to 200 i cannot get it to register anything

i am an idiot

Platinum - Posts: 13,714

Joined: September 21, 2006

Location: Louisiana, United States

Posted: April 27, 2009 at 4:59 PM / IP Logged

If they are supposed to be 100 ohm resistors, they should read 100 with the meter set to the 200 Ohm setting. What color are the bands on the resistor?

< Prev Page Next Page >

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.