I have an Orion HCCA 250r; I bought brand new back in 1998. Since then I have recapped it, as well as, replaced the transistors. Within the last week I have noticed a decrease in volume output. I run this amp bridged to one sub.
After some minor trouble shooting, I discovered that the right rca input is not working. This weekend I plan on removing the amp and opening it up to see if there is a bad solder on the rca bracket. However, if there is anyone that has come across this before and can point me in a narrowed or pin point area to look, or what might need to be replaced, I would greatly appreciate it. Thank you for taking the time to read.
P.S. pictures would be great, if you have any. Thank you.
After some minor trouble shooting, I discovered that the right rca input is not working. This weekend I plan on removing the amp and opening it up to see if there is a bad solder on the rca bracket. However, if there is anyone that has come across this before and can point me in a narrowed or pin point area to look, or what might need to be replaced, I would greatly appreciate it. Thank you for taking the time to read.
P.S. pictures would be great, if you have any. Thank you.
Orion HCCA 250r right channel volume very low.
Resoldered the rca, did not fix it.
Right channel volume is very low, nothing looks burt and all resistors that I checked are good. Maybe, I am not looking in the right area.
Any ideas, on what could be the issue?
Thank you.
Resoldered the rca, did not fix it.
Right channel volume is very low, nothing looks burt and all resistors that I checked are good. Maybe, I am not looking in the right area.
Any ideas, on what could be the issue?
Thank you.
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Have you operated all switches and pots thorough their entire range to confirm that none affect the level of the right channel?
Mr. Babin, thank you for the reply.
Yes, all switches and pots have been switched or rotated through their full ranges.
As for test equipment, all I have is a innova 3320 multimeter.
Thank you, once again for the help.
Yes, all switches and pots have been switched or rotated through their full ranges.
As for test equipment, all I have is a innova 3320 multimeter.
Thank you, once again for the help.
I don't know if I'll have enough information on this amp to troubleshoot the signal level problem through the preamp circuit.
Connect the meter's black probe to one of the non-bridging terminals.
Set all crossovers to flat/off.
Set the gains to max.
Drive a test tone of 60Hz into the amp at a level of about 0.5vAC. Confirm that you read that voltage on the back of the RCA jacks.
Connect the meter's black probe to one of the non-bridging terminals.
Set all crossovers to flat/off.
Set the gains to max.
Drive a test tone of 60Hz into the amp at a level of about 0.5vAC. Confirm that you read that voltage on the back of the RCA jacks.
Mr. Babin,
All crossover levels are flat and off.
Left / right gains max.
60hz test tone applied, closest Vac at rca end equaled .562Vac Left and .548Vac right.
Meter Black probe applied to non bridge amplifier output; red probe applied to left and then right back of rca braket . Readings equaled .555 left and .541 right.
Thank you for your time, and help. I greatly appreciate it, this is new and unfamiliar territory to me.
All crossover levels are flat and off.
Left / right gains max.
60hz test tone applied, closest Vac at rca end equaled .562Vac Left and .548Vac right.
Meter Black probe applied to non bridge amplifier output; red probe applied to left and then right back of rca braket . Readings equaled .555 left and .541 right.
Thank you for your time, and help. I greatly appreciate it, this is new and unfamiliar territory to me.
Mr. Babin,
The DS1267 100 Vac on pins:
Pin 2 = .000
Pin 4 = .000
Pin 11= .000
Pin 12= .000
Additional info, the only pins that had Vac were pins 1, 5, and 9. All three read Vac .005, if that helps. Thank you for your Time and help.
The DS1267 100 Vac on pins:
Pin 2 = .000
Pin 4 = .000
Pin 11= .000
Pin 12= .000
Additional info, the only pins that had Vac were pins 1, 5, and 9. All three read Vac .005, if that helps. Thank you for your Time and help.
Yes, the amp was powered up with 12.6 volts DC.
I also looked up the data sheet for that part, to ensure I was testing the correct pins. As for the rest of the sheet it would take sometime for me to figure it out.
I also looked up the data sheet for that part, to ensure I was testing the correct pins. As for the rest of the sheet it would take sometime for me to figure it out.
Are you sure that one channel plays normally?
I can't see how you can have no voltage there but have one channel working.
I can't see how you can have no voltage there but have one channel working.
I have been running this amplifier in the bridged mode, not mono bridged, bur bridged. It does put out, but only with the left input.
Is there anything else I could do, for trouble shooting?
Thank you for your time.
Is there anything else I could do, for trouble shooting?
Thank you for your time.
Confirm that the amp is working (there could be an intermittent problem in the 'good' channel. After you confirm that the channel is working, recheck the voltages on those pins.
Will Do. How long should I run it on the left channel?
Or just, confirm that it plays on the left in stereo mode?
Or just, confirm that it plays on the left in stereo mode?
Mr. Babin,
In stereo mode the left and the right channels work. But in bridged mode the Right input is very weak.
Is there anything that would kill the right input signal in bridged mode? The polarity switches are set left 0 phase and right is 180 phase, as per the manual.
I am at a loss.
In stereo mode the left and the right channels work. But in bridged mode the Right input is very weak.
Is there anything that would kill the right input signal in bridged mode? The polarity switches are set left 0 phase and right is 180 phase, as per the manual.
I am at a loss.
I think you have a bad switch.
If both channels play in stereo mode set it to stereo, re-check the voltages on the 1267 so that they can be used as a reference for other tests.
If both channels play in stereo mode set it to stereo, re-check the voltages on the 1267 so that they can be used as a reference for other tests.
Just a quick question. Did you want me to play the 60Hz tone while doing the pin test?
With the amp on and music playing the Vac for the pins were fluctuating.
Here are the values:
Pin 1= .004 Pin 14= .001
Pin 2= .030 Pin 13= .030
Pin 3= .000 Pin 12= .040
Pin 4= .000 Pin 11= .030
Pin 5= .005 Pin 10= .000
Pin 6= .001 Pin 9= .005
Pin 7= .000 Pin 8= .000
I hope this helps, because now I have no idea.
Thank you.
With the amp on and music playing the Vac for the pins were fluctuating.
Here are the values:
Pin 1= .004 Pin 14= .001
Pin 2= .030 Pin 13= .030
Pin 3= .000 Pin 12= .040
Pin 4= .000 Pin 11= .030
Pin 5= .005 Pin 10= .000
Pin 6= .001 Pin 9= .005
Pin 7= .000 Pin 8= .000
I hope this helps, because now I have no idea.
Thank you.
Yes. Use the 60Hz test tone with 1/2v AC input at the RCAs for all measurements unless otherwise instructed.
My apologies.
Disregard last values sent. I will redo the readings with the 60Hz tone, rca input of .5 Vac, and no speakers connected.
Thank you for your patience.
Disregard last values sent. I will redo the readings with the 60Hz tone, rca input of .5 Vac, and no speakers connected.
Thank you for your patience.
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