Hello,
My Infinity tss-1200 subwoofer started giving me issues a few months ago. It started with a low hum/buzz and occasionally a chirp. Neither were consistent and would happen a few times daily or a few times weekly. Now the subwoofer is not working at all.
The manual is found Here
I'm no expert at using meters, when looking at the schematic (bottom of document on the left), I've tested the voltages at AC1/AC3 and they are both around 50V. I've also tested at C4 and C9 (very bottom on right) with their volts ~14.5.
I also removed one of the large capacitors (3300uF80V) and tested with a capacitance meter. The reading was 2950uF. (Thanks to those who responded in my capacitor post). I also connected a 1.5V battery to charge the capacitor.. The reading was steady at 1.5V dropping 0.01 V every 10-15 seconds. (I have not tested the 2nd capacitor).
I've also looked over the board and haven't noticed any burnt/bulging caps or resistors, etc.
I've attached a few pictures. 1 pic is an overall view of the board (it's missing the one capacitor I removed). And there are 2 pics that show a copper coil with some gel-like substance. This gel looks like it's spread out and covered some of the components and went under others. Not sure what the gel is, but is that okay?
Now I'm at a lose. Can anyone give me ideas on what I should check?
My Infinity tss-1200 subwoofer started giving me issues a few months ago. It started with a low hum/buzz and occasionally a chirp. Neither were consistent and would happen a few times daily or a few times weekly. Now the subwoofer is not working at all.
The manual is found Here
I'm no expert at using meters, when looking at the schematic (bottom of document on the left), I've tested the voltages at AC1/AC3 and they are both around 50V. I've also tested at C4 and C9 (very bottom on right) with their volts ~14.5.
I also removed one of the large capacitors (3300uF80V) and tested with a capacitance meter. The reading was 2950uF. (Thanks to those who responded in my capacitor post). I also connected a 1.5V battery to charge the capacitor.. The reading was steady at 1.5V dropping 0.01 V every 10-15 seconds. (I have not tested the 2nd capacitor).
I've also looked over the board and haven't noticed any burnt/bulging caps or resistors, etc.
I've attached a few pictures. 1 pic is an overall view of the board (it's missing the one capacitor I removed). And there are 2 pics that show a copper coil with some gel-like substance. This gel looks like it's spread out and covered some of the components and went under others. Not sure what the gel is, but is that okay?
Now I'm at a lose. Can anyone give me ideas on what I should check?
Attached Files
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