When the audio levels are low, I am having a problem with the right side audio cutting out. Once that happens, I can hear it faintly but it's very quiet and has a slight buzz to it. I cam dump everything to the right side and boost the levels and it'll ''break through'' and work fine until it cuts out again. Any suggestions?
P.S. My question really isn't about a 1604, it's just making me choose a "valid product".
Try cleaning al of the sliders using an electronics cleaning spray. Choose one that contains a lubricant as well. Dirty sliders can cause this especially at low volume levels. If that does not cure the problem, there may be a defective IC inside the unit. Many mixers use opamp ICs as buffers and final stage amplifiers. These are inexpensive and can fail in that manner. Without knowing the specific make and model ogf your unit, I can't give you any details. Please post the make and model and I'll try to provide additional possibilities.
Dan
OK. I own one of these too. The description is the same. These use common opamp ICs that can go bad. The problem wil be finding the defective IC. Try to narrow down the section a bit by using the inserts at various points to see where the channel drops out. I have access to teh service manual, so once you narrow it down a bit, I can give you details on the parts and locations etc.
Dan
Unfortunately, this can only be traced with an oscilloscope. You must follow the signal to determine where it stops. Based upon your description, there is a bad connection internal to an IC that the higher sound level causes to bridge and thus works for a while. These are difficult to find.
Keep me posted.
Dan
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Sometimes cabling itself can be the problem too. Try different cables in line of the system, or swap your left and right and see if the problem reverses. If it does, the issue may befurther down the line. If it is, check all of your line cables down the line through your speaker cables. The issue may actually be in your amp. Some amps have sleep or standby mode they go into until a loud signal punches them awake. This can happen if their internal noise gate isn't activated for a bit, or if weak signal in the cables doesn't "wake " them up. Try different cables, and or get the amp serviced.
This sounds like a dirty connector. Get some good quality electrical connector spray cleaner and clean the plug on your cable and also spray a little inside the output connector on the mixer.
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Dan, thanks for the quick response. As far as the make and model, everything I have describes it as a Mackie 32x8x2 8-bus Mixing Console.
Is there a way to test these with a volt meter?
I went and bought a can of contact cleaner. I sprayed and cleaned out each individual pot on the board (yes, all 501) and then took the cover off the back. I went into each ribbon cable/connector and cleaned both ends and then used canned air to dry everything. I got it all back together and it's worked like a champ ever since then. (knock on wood)
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