This amp wont power up heres the voltages i have on the 3525
1:2.58
2:4.48
3:.02
4:.35
5:2.17
6:3.18
7:2.12
8:4.90
9:.19
10:0
11:0
12:0
13:12.65
14:0
15:13.23
16:5.16
Any thoughts?
1:2.58
2:4.48
3:.02
4:.35
5:2.17
6:3.18
7:2.12
8:4.90
9:.19
10:0
11:0
12:0
13:12.65
14:0
15:13.23
16:5.16
Any thoughts?
Replaced the IC and it blew a fet i cut the bad fet out.
Now all the amp does is try to power on the green light comes on a sec then shuts off and repeats the cycle
Any ideas where to check now?
Now all the amp does is try to power on the green light comes on a sec then shuts off and repeats the cycle
Any ideas where to check now?
Pin 10 is not pulsing at all its 0 volts all the time.
Amp only trys to draw 5 amps when trying to power on
Amp only trys to draw 5 amps when trying to power on
Are you sure there are no shorted outputs?
If you measure the DC voltage across every emitter resistor, does any one show more than 0.000v DC?
Is there any channel that pulses DC on its output?
If you measure the DC voltage across every emitter resistor, does any one show more than 0.000v DC?
Is there any channel that pulses DC on its output?
All emitter resistors measure 0 volts.
I removed all of the outputs from the amp .
Amp still does the same thing.
every channel pulses dc on the outputs
I removed all of the outputs from the amp .
Amp still does the same thing.
every channel pulses dc on the outputs
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With the outputs out of the board, you would expect pulsing on the bases and collectors.
Are any of the thermistors shorted?
Do any of the emitter resistors appear to have overheated?
Are any of the thermistors shorted?
Do any of the emitter resistors appear to have overheated?
No emitter resistors look like they appear to have overheated the look brand new still.
What are they using for thermistors in this amp? I dont see any
What are they using for thermistors in this amp? I dont see any
The thermistors likely look like orange diodes. They are under the board, possibly buried in thermal compound.
Meter set to ohms i get the following readings on the thermistor
( 1 side unsoldered from thee board)
45.7K
Probes reversed
45.4K
( 1 side unsoldered from thee board)
45.7K
Probes reversed
45.4K
It's a resistor in a diode type case so the resistance should essentially be the same, regardless the probe position.
There should be multiple thermistors. How many did you find?
There should be multiple thermistors. How many did you find?
On the top of the board between the outputs for each channel, is there a circle with an x in it?
Ok, if there are no circles with an x, this amp may not have the thermistors on each channel.
Something driving pin 2 is shutting the amp down. You'll have to begin removing components from that circuit to see if you can determine what's shutting it down.
Something driving pin 2 is shutting the amp down. You'll have to begin removing components from that circuit to see if you can determine what's shutting it down.
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