Orion 250 SX - Bad resistor or not?

0ldSch00lf00l · 29th August 2008, 08:40 PM

I purchased this "working" Orion 250 SX off of Ebay, but I have yet to install it in my car. I was wondering if these resistors looked bad to you?

This is the one on the right side of the board:

This is the one on the left side of the board:

According to my POS Radio Shack meter, each one reads at 8.7 ohms. Regardless, do you think I am overly paranoid and this amp is good to go or should I schedule a trip to dB-r?

shagone · 29th August 2008, 09:56 PM

firstly i would find out what the original value should be and i would change them both for sure.

i'm sure they must be at least out of tolerance and ready to open up any day now, plus the solder joits are bad from the heat.

you should also find out what was stressing the resistors so much. there could be other component that are out of spec.

0ldSch00lf00l · 29th August 2008, 10:28 PM

I would be willing to bet that the person I purchased it from bridged it too low OR clipped the heck out of the amp by using the EQ. Back in the day I saw way too many people try to run those SX series amps like they were the HCCA line.

I guess I will contact dB-r and arrange to send it off.

0ldSch00lf00l · 29th August 2008, 11:31 PM

Oh well, looks like I will be sending it off for repair.

I Am An Idiot · 30th August 2008, 01:31 AM

It is not uncommon to have a resistor run a little hotter than it should. Have you at least put an ohm meter across it and see what it reads?

ppia600 · 30th August 2008, 01:49 AM

They may be ten ohm, look at the matching ones near the other transistors, there may be more than two. I also believe it could be from running too low of a load.

0ldSch00lf00l · 30th August 2008, 04:19 AM

I have been in contact with Chris at dB-r and will send him the amp as soon as I can.

I Am An Idiot · 30th August 2008, 11:29 AM

Have you at least tried the amp to see if it works?

0ldSch00lf00l · 30th August 2008, 01:07 PM

Quote:

Originally posted by I Am An Idiot
Have you at least tried the amp to see if it works?

I have not tried it yet because I am too much of a chicken. I figured I would look into getting the potential problem fixed prior to installing the amp.

I Am An Idiot · 30th August 2008, 03:18 PM

If you are near the capitol city I will put it on the bench to tell you if it works. It will take less than 5 minutes.

29th August 2008, 08:40 PM	#1
0ldSch00lf00l diyAudio Member Join Date: Aug 2008 Location: Lafayette, Louisiana	Orion 250 SX - Bad resistor or not? I purchased this "working" Orion 250 SX off of Ebay, but I have yet to install it in my car. I was wondering if these resistors looked bad to you? This is the one on the right side of the board: This is the one on the left side of the board: According to my POS Radio Shack meter, each one reads at 8.7 ohms. Regardless, do you think I am overly paranoid and this amp is good to go or should I schedule a trip to dB-r?

30th August 2008, 01:31 AM	#5
I Am An Idiot diyAudio Member Join Date: Mar 2007	It is not uncommon to have a resistor run a little hotter than it should. Have you at least put an ohm meter across it and see what it reads? __________________ If it ain't broke Don't fix it

30th August 2008, 01:49 AM	#6
ppia600 diyAudio Member Join Date: Jun 2007 Location: Louis y ana	They may be ten ohm, look at the matching ones near the other transistors, there may be more than two. I also believe it could be from running too low of a load. __________________ Don't worry... you can always turn the gain down!

30th August 2008, 11:29 AM	#8
I Am An Idiot diyAudio Member Join Date: Mar 2007	Have you at least tried the amp to see if it works? __________________ If it ain't broke Don't fix it

30th August 2008, 03:18 PM	#10
I Am An Idiot diyAudio Member Join Date: Mar 2007	If you are near the capitol city I will put it on the bench to tell you if it works. It will take less than 5 minutes. __________________ If it ain't broke Don't fix it


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29th August 2008, 09:56 PM	#2
shagone diyAudio Member Join Date: Apr 2007	firstly i would find out what the original value should be and i would change them both for sure. i'm sure they must be at least out of tolerance and ready to open up any day now, plus the solder joits are bad from the heat. you should also find out what was stressing the resistors so much. there could be other component that are out of spec.

29th August 2008, 10:28 PM	#3
0ldSch00lf00l diyAudio Member Join Date: Aug 2008 Location: Lafayette, Louisiana	I would be willing to bet that the person I purchased it from bridged it too low OR clipped the heck out of the amp by using the EQ. Back in the day I saw way too many people try to run those SX series amps like they were the HCCA line. I guess I will contact dB-r and arrange to send it off.

29th August 2008, 11:31 PM	#4
0ldSch00lf00l diyAudio Member Join Date: Aug 2008 Location: Lafayette, Louisiana	Oh well, looks like I will be sending it off for repair.

30th August 2008, 04:19 AM	#7
0ldSch00lf00l diyAudio Member Join Date: Aug 2008 Location: Lafayette, Louisiana	I have been in contact with Chris at dB-r and will send him the amp as soon as I can.

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