Is that with the probes on the two speaker terminals for each channel?
Is it exactly 4.00v for both channels?
Do the two channels produce clean audio?
So they clip symmetrically top and bottom?
Is it exactly 4.00v for both channels?
Do the two channels produce clean audio?
So they clip symmetrically top and bottom?
Yes speaker probes directly across speaker terminals .
2 channels produce clean audio
Yes -3.98 volts on both front channels
And they both clip symmetrically
2 channels produce clean audio
Yes -3.98 volts on both front channels
And they both clip symmetrically
It's strange that the two channels have 4v of offset and still clip symmetrically.
What is the DC voltage (precisely) on pins 3 and 4 of all 4 driver boards?
What is the DC voltage (precisely) on pins 3 and 4 of all 4 driver boards?
Do you read 0 ohms between all of the non-bridging speaker terminals?
Did you use the non-bridging speaker terminals (secondary ground) when measuring the driver voltages?
Did you use the non-bridging speaker terminals (secondary ground) when measuring the driver voltages?
Yes read 0 ohms between all non bridging speaker terminals
If I use the non bridging speaker terminals to measure the voltage on pins 3 and 4
Pin 3:0.00
Pin 4:-0.18
This is on all cards
Not sure if this matters or not but when I received the amp it had this issue and I opened it up and it was packed full of dead roaches and webs I power washed it at the car wash but the issue with the dc on speaker terminals remains
If I use the non bridging speaker terminals to measure the voltage on pins 3 and 4
Pin 3:0.00
Pin 4:-0.18
This is on all cards
Not sure if this matters or not but when I received the amp it had this issue and I opened it up and it was packed full of dead roaches and webs I power washed it at the car wash but the issue with the dc on speaker terminals remains
The problem with the channels is the driverboards
I believe they have poor solder connections on them .
If I use low heat can I reflow the solder ?
Or what is the best way to cure this issue since I know the boards don’t like heat
I believe they have poor solder connections on them .
If I use low heat can I reflow the solder ?
Or what is the best way to cure this issue since I know the boards don’t like heat
Same exact problem on 2 driver boards?
Did you go back to check for symmetrical clipping with a load?
Did you go back to check for symmetrical clipping with a load?
Yes same exact problem on 2 driver boards .
I reflowed the solder on them and the dc is gone .
Been playing the amp for 2 hours now with no issues
I reflowed the solder on them and the dc is gone .
Been playing the amp for 2 hours now with no issues
You need to play the lottery. For two different channels to have the same exact fault with the exact same voltage being produced by the fault is virtually impossible. Your odds of winning the lottery are better.
I reflowed the solder on 2 driver boards that had dc across the speaker terminals .
The dc offset went away .
I understand what your saying but not lying or telling a story when I say I reflowed the solder on the driver boards and the dc went away
The dc offset went away .
I understand what your saying but not lying or telling a story when I say I reflowed the solder on the driver boards and the dc went away
I don't think you're lying but there's virtually no chance of that happening. I'd be expecting this to boomerang with the problem coming back.