Mmats pro d2000.2

[Mjimenez]

oky hands to work

 

[Mjimenez]

this pin goes to the diode d72 especially the anode and this in turn to the pin 9 of a lm2901d I am finding out the function of this

 

[Mjimenez]

and the power led does not turn on

 

[Mjimenez]

How much voltage should I have in pins 3 and 12 of the lm2901d?

 

[Mjimenez]

Mr. Perry does not remember the link to see if I can solve my problem and find and do not find anything, in fact do not have voltje none of the comparators do not know if I'm doing wrong but I do not give the capacitor that is possibly damaged.

 

[Mjimenez]

well I already managed to generate the 79.8 v rail by removing an lm2901d that is next to the hip4080 I am buying it now but I still can not make the led turn on I do not know if this lm2901d is the one who manages it according to me not since the one that handles this next to the mic4424cn that I should check right away

 

[Perry Babin]

See if this helps. It's an earthquake but they're similar.

 

[Mjimenez]

Oky lo checo gracias Perry

 

[Mjimenez]

If apparently in this case is ic6 is the one that withdraws and stopped shooting under pin 8 and worked to give the almost 80v rail now I see that sends part to the ic3 to be specific to comparators 2 and 3 in this schematic to it looks like something different pin 8 of the Sg3525a goes to a diode and a capacitor I hope with the change back to life this nice device I still need to make known the progress

 

[Mjimenez]

I already changed the lm2901d but I still can not get it out of his dream the amplifier still can not turn on the led is connected to pin 1 of the lm2901d here are the voltages that is what is wrong?

 

[Perry Babin]

Why don't you have supply voltage on pin 3?

 

[Mjimenez]

I do not know I've been looking for that fault, I think it's the origin of all my ills, all ICs referring to comparators and operational amplifiers (lm2901d, tlc2274c and lm837m) are like this (0v in vcc +) I can not find the reason for the lack of voltage today I keep looking for the head, tomorrow I will not surrender right now so I will give another revised to the schema of the earthquake

 

[Perry Babin]

Does the 4080 have supply voltage?

Are there any low value resistors in series with the 2901s?

 

[Mjimenez]

I do not have voltage in 4080 or in lm2901d and the other ic's are only in the mic4424cn and the Sg3525a, that's why I only pull the power supply stage I'm a bit confused

 

[Perry Babin]

Is the equivalent of R96 open?

 

[Mjimenez]

already ignited and it was only this 2n4403 it marked me only as a good diode in the end it damaged the HIP4080aip that I had already put it but good process to place the mosfets out

 

[Mjimenez]

here the evil

 

[Mjimenez]

ready has been solved and working would not know how many watts rms throws because that equation is not removed accurately and for the moment I do not have an oscilloscope so I would not know what is the clip of this amplifier in order for a summary to work made change of: 2 voltage comparators lm2901d. 1 pnp transistor 2n4403. 1 HIP4080aip. 2 resistors 13fr020. 8 mosfets irf3710z. 12 mosfets irf3205. 1 b103 potentiometer is the gain level. 1 Sg3525a. 2 resistors 10 ohms (180 and 181). good to thank you for all your support Mr. Perry Babin.

 

[Mjimenez]

Hi, I'm back with problems in the amplifier I can see that when the amplifier works at high volume the power source is stressed and the irf3205 makes a buzzing sound and on the subwoofer as if the amplifier was turned off, what should I check?

 

[Mjimenez]

Hi, I'm back with problems in the amplifier I can see that when the amplifier works at high volume the power source is stressed and the irf3205 makes a buzzing sound and the subwoofer makes a pounding sound as if the amplifier was turned off, what should I check?