Ok thanks Perry but before doing that, where i must put the black wire of my scope ?
I do that test, black wire connected to 12Vdc GND and probe to primary winding of the first transformer with scope set to dc with 5v/div "5v/div is the maximum on my scope, i haven't 10v/div" and 0.2 time/div but i can't see a square wave 😕
I do that test, black wire connected to 12Vdc GND and probe to primary winding of the first transformer with scope set to dc with 5v/div "5v/div is the maximum on my scope, i haven't 10v/div" and 0.2 time/div but i can't see a square wave 😕
Are you using a 10x probe? If so, the scope will read up to 50v/div.
I don't understand the 0.2time. Is there a 2mS setting on the timebase?
You won't see the individual pulses at 2ms. You'll see an area that's brighter than the normal background color, about 2.5 divisions high (at 10v/div, 1v/div with a 10x probe) and extends across the entire display.
I don't understand the 0.2time. Is there a 2mS setting on the timebase?
You won't see the individual pulses at 2ms. You'll see an area that's brighter than the normal background color, about 2.5 divisions high (at 10v/div, 1v/div with a 10x probe) and extends across the entire display.
That's normal. This was to allow you to see if the power supply was shutting down when the power supply makes strange noises.
While you have this set up, confirm that the power supply produces this waveform just about precisely when you apply remote voltage and remains like this until about 1 second after the pop.
While you have this set up, confirm that the power supply produces this waveform just about precisely when you apply remote voltage and remains like this until about 1 second after the pop.
yes it have this waveform when the pop noise appear .
Now i desoldering the modu1 to see if the pop noise is here.
but can i test without the heatsink ? because it's boring to replace each time the pad isolator and screw etc...
Now i desoldering the modu1 to see if the pop noise is here.
but can i test without the heatsink ? because it's boring to replace each time the pad isolator and screw etc...
You should be able to power it up long enough for you to determine if it's going to pop (just a few seconds) but any longer and you risk blowing a lot of FETs.
ok so i will keep the heatsink
but i have a problem the module is difficult to desoldering ..... 😕
but i have a problem the module is difficult to desoldering ..... 😕
Ok i desoldering the module 🙂
Now i mount the board on the heatsink and i'll power on the amp to see if the pop noise is present.
Now i mount the board on the heatsink and i'll power on the amp to see if the pop noise is present.
I do the test and without the module the amp don't start and two leds are on and the power supply do a noise of switch like on/off etc.....it's worse than before
and the voltage on the speaker terminal vary between 7vdc to 15vdc 😕
i haven't put speaker during the test ....
Could you help me Perry ?
thanks
and the voltage on the speaker terminal vary between 7vdc to 15vdc 😕
i haven't put speaker during the test ....
Could you help me Perry ?
thanks
I remove R66 and R67 near the emplacement of the module
Yes the dc is not present at speaker teminal, and the amp start , and i do that without the module
Yes the dc is not present at speaker teminal, and the amp start , and i do that without the module
With a speaker connected the amp don't pop 🙂
And now the bizarre background noise from the speaker "sound like frequency sweep" also disappear 🙂
And now the bizarre background noise from the speaker "sound like frequency sweep" also disappear 🙂
An externally hosted image should be here but it was not working when we last tested it.
yes i have for
pin 9: 4.9vdc
pin5: +13.2vdc
pins4: - 13.1vdc
Contact Sinuslive to see if they will sell you a driver module. There's no guarantee that it will solve the problem but it appears that everything beyond it is OK and shorting the input to the signal ground eliminated everything before it.
Ok thanks perry 🙂
for the cms resistor R66 and R67 Do you advice me to change them or i can resolde them ?
If i must change them the value is 1kohm but the power in what for the resistor 250mw is ok or less ?
Thanks
for the cms resistor R66 and R67 Do you advice me to change them or i can resolde them ?
If i must change them the value is 1kohm but the power in what for the resistor 250mw is ok or less ?
Thanks
You can solder them in place as long as you don't power up the amp until you get a module back in the amp. They don't need to be replaced unless you damaged them when you removed them.
Hello Perry
Thanks a lot for the time you've past to help me 🙂
I've just sent an email to sinuslive with a photo of the module.
I hope to receive an answer today....
Thanks a lot for the time you've past to help me 🙂
I've just sent an email to sinuslive with a photo of the module.
I hope to receive an answer today....
- Status
- Not open for further replies.