Ok. Checked previous posts but couldn't find what I was looking for.....I have a CS800X and the triac and power supply board were all disconnected....the triac checked shorted which is why the owner had said that it would pop the main panel ckt. breaker when plugging it in......you didn't even need to turn on the power stitch...I picked up a new triac but I do not have a pic of where the wiring all goes.....as I said, this came to me with everything dis-connected...Anybody have a pic of the triac wiring and the wiring to the power supply board......Tanks to anybody for any help....
Call customer service at Peavey, and ask for the schematic. You can figure it out from the schematic. However, they might also be able to provide the mains wiring diagram.
The big triac is basically the on/off switch. For an amp of this size, the power switch would arc its contacts if it switched the whole power. So the power switch controls the triac, which in turn controls the mains power.
So, if the triac shorts, it won't usually blow any breakers. It simply makes the amp always on, like a broken power switch.
That was the large triac riveted to the chassis. There are also smaller triacs on the output of each channel, called a crowbar circuit. If the amp goes to DC on the output, the triac will turn on and short across, blowing the fuse. They rarely fail on their own, they usually give their life protecting your speakers. They are on the amplifier boards.
The big triac is basically the on/off switch. For an amp of this size, the power switch would arc its contacts if it switched the whole power. So the power switch controls the triac, which in turn controls the mains power.
So, if the triac shorts, it won't usually blow any breakers. It simply makes the amp always on, like a broken power switch.
That was the large triac riveted to the chassis. There are also smaller triacs on the output of each channel, called a crowbar circuit. If the amp goes to DC on the output, the triac will turn on and short across, blowing the fuse. They rarely fail on their own, they usually give their life protecting your speakers. They are on the amplifier boards.
Thanks Enzo.....when the unit was plugged it, it would pop the panel breaker...and that was with the power switch in the OFF position...I'll check on the schematic.....
Sure, but if the triac is shorted, that is the same as if the power switch was always on. The only way to turn of the amp is to unplug it from the wall, in other words. SO of course anything that is wrong with it will blow the breaker regardless of the power switch setting. Follow?
When these amps blow fuses, by far the most common reason is a shorted output stage. I mentioned those output triacs on the channels. A simple test for those is to measure resistance across the speaker connections. The triac is parallel, and if shorted, then the speaker connections will be shorted, and it is a pretty sure bet the output of that channel is blown.
Of course a rectifier bridge could be shorted, and the list from there gets more and more rare.
I don't have my Peavey files near me, is this a "wind tunnel" model? In other words is there a large metal grate covered hole in the front panel for ventilation? The older versions had a fan in the rear, wwith vents on the top and sides, but not the front.
When these amps blow fuses, by far the most common reason is a shorted output stage. I mentioned those output triacs on the channels. A simple test for those is to measure resistance across the speaker connections. The triac is parallel, and if shorted, then the speaker connections will be shorted, and it is a pretty sure bet the output of that channel is blown.
Of course a rectifier bridge could be shorted, and the list from there gets more and more rare.
I don't have my Peavey files near me, is this a "wind tunnel" model? In other words is there a large metal grate covered hole in the front panel for ventilation? The older versions had a fan in the rear, wwith vents on the top and sides, but not the front.
Yes it is the wind tunnel model...and yes...I got you ....sorry about that...the outputs seem to test fine......no direct shorts..I'll have to figure out the wiring first and then move on from there....
I forgot......so it doesn't really matter which mains wires go to the triac....by the way I checked the new triac...between gate and one terminal....56 ohms...between gate and the other terminal....no reading.....across the two main terminals...no reading......
TRIAC
I know this is not my thread but I have almost exactly what is going on here with my buddy's wind tunnel model .. I have the schematic somewhere and I also have step by step pictures from when I was breaking it down. If you still need some pics lemme know and I will figure out how to post them. 🙂
I have a request as well, if anyone has the data sheet to the triac and the schem. for the power board as well😕, the large 10a resistor has fried on mine and I cant see what the value was for the thermal damage. I tested everything I could on the power board already but its been a while back and I don't feel like digging for my notes. it would be very much obliged
thanks for any assistance and I'll be watchin the thread in case you need those pictures.😎
I know this is not my thread but I have almost exactly what is going on here with my buddy's wind tunnel model .. I have the schematic somewhere and I also have step by step pictures from when I was breaking it down. If you still need some pics lemme know and I will figure out how to post them. 🙂
I have a request as well, if anyone has the data sheet to the triac and the schem. for the power board as well😕, the large 10a resistor has fried on mine and I cant see what the value was for the thermal damage. I tested everything I could on the power board already but its been a while back and I don't feel like digging for my notes. it would be very much obliged
thanks for any assistance and I'll be watchin the thread in case you need those pictures.😎
triac
sorry to butt in on your thread but I have the exact same issue and I am looking for the schem. of the power board and the data sheet for the triac.
I took pictures as I was breaking my wind tunnel cs800x down to clean and test it if you need them for wiring yours back up still then let me know I will send them to you. if anyone has the info Im looking for please let me get a copy I would be extremely grateful
thx guys
(sry if this posts twice, I tried to post this once already but it didn't show up so I am givin it another shot)
sorry to butt in on your thread but I have the exact same issue and I am looking for the schem. of the power board and the data sheet for the triac.
I took pictures as I was breaking my wind tunnel cs800x down to clean and test it if you need them for wiring yours back up still then let me know I will send them to you. if anyone has the info Im looking for please let me get a copy I would be extremely grateful
thx guys
(sry if this posts twice, I tried to post this once already but it didn't show up so I am givin it another shot)
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