Hello
I have a infinity 7541a and its not working
It's a 4 channel infinity. I've used it to power two speakers (t696 JBL)for a while and it's always worked fine.It worked for a 3days and one times sounded great bad like noise and hedounit reseted and a channel dead...
I use Another Chanell For 1month Then it Repeated...
I can't get anything out of my amp. There's three lights on the front of it, a and now clip, power, and protect is on and They all flash and the owners manual doesn't say much on what could be wrong. In trying to solve the problem I unplugged all of the speaker wires and RCA cables. When I powered it up, the lights still flashed. I then pulled the battery to see if I could reset it or something, but it didn't do anything. I tested all of the fuses and they're
fine
im living in iran and there is no customer supporter of infinity
im openinig the pack of Amp and see 4capacitore is destroied
i changing theme but still its not working
any help appriciated🙁🙁🙁
here is the picture of Amplifier...
and service manual i marked damaged Capacitores With red Circule
I have a infinity 7541a and its not working
It's a 4 channel infinity. I've used it to power two speakers (t696 JBL)for a while and it's always worked fine.It worked for a 3days and one times sounded great bad like noise and hedounit reseted and a channel dead...
I use Another Chanell For 1month Then it Repeated...
I can't get anything out of my amp. There's three lights on the front of it, a and now clip, power, and protect is on and They all flash and the owners manual doesn't say much on what could be wrong. In trying to solve the problem I unplugged all of the speaker wires and RCA cables. When I powered it up, the lights still flashed. I then pulled the battery to see if I could reset it or something, but it didn't do anything. I tested all of the fuses and they're
fine
im living in iran and there is no customer supporter of infinity
im openinig the pack of Amp and see 4capacitore is destroied
i changing theme but still its not working
any help appriciated🙁🙁🙁
here is the picture of Amplifier...
and service manual i marked damaged Capacitores With red Circule
Attachments
Those are electrolytic. Probably due to either high voltage input or excessive dc voltage.
Look like 33uf 16v.
The ones you got circled on the diagram are ceramic.
Look like 33uf 16v.
The ones you got circled on the diagram are ceramic.
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have a similar problem with Phoenix gold tantrum 400.4 amp it was faulty toroid ,due to internal vibration insulating layers of copper wire were worn and high voltage emitted by the mass of the RCA inputs
tnx for replay...
yes those Are Ceramics and Spefications( 10uf 16Volt)
i changing Theme to 10uf and 50Volt
but not Working and one change is The light flashing are different now...
protect light now flash Slower Than Others
how Find Out problem from where?
a Friend Is say May be the wire Are Syndetic (like The Ground Or The Wire of Coacsial )
i just Want know checking where Of aMp And Searchinf For Problem
I looked at the schematic for the amp, and those caps are used to decouple and DC voltage from any input source to the amp, but they also can do the same in reverse if your amp has shorted rails back onto the ground common of the amp internally so I am thinking you might have blown channels and or a shorted power toroid, not so much the toroid though.
Just replacing those caps will not fix a blown amp channel issue and so if they get replaced they will just explode again like they already did unless you tech out the rest of the amp and fix what else is internally wrong with the amp. It looks like way more then 16 volts hit those caps and that is why they exploded. Must have been very noisy when they went on you. A simple voltmeter testing will tell you what voltages on on those blown up caps, but I am fairly sure your amp has shorts elsewhere inside of the amp causing this issue....hope this helps some..
Just replacing those caps will not fix a blown amp channel issue and so if they get replaced they will just explode again like they already did unless you tech out the rest of the amp and fix what else is internally wrong with the amp. It looks like way more then 16 volts hit those caps and that is why they exploded. Must have been very noisy when they went on you. A simple voltmeter testing will tell you what voltages on on those blown up caps, but I am fairly sure your amp has shorts elsewhere inside of the amp causing this issue....hope this helps some..
Guys I Found Problem...
When I Take The TIP 35C O 636 From Circuit Amp Get Out From Protect...
Here The Map Of Ampli And The Transistore In Left Of Diagram
Is Any Body Here Know Why This Transistore Is dead?
And I Will Take That And Replace Tommorw but I want Know How This Happening...
When I Take The TIP 35C O 636 From Circuit Amp Get Out From Protect...
Here The Map Of Ampli And The Transistore In Left Of Diagram
Is Any Body Here Know Why This Transistore Is dead?
And I Will Take That And Replace Tommorw but I want Know How This Happening...
Why it failed? many reasons/possibilities but most likely it you either shorted your speaker wires or pushed it to the limits.
Replace both the TIP35c and the TIP36c that are in that channel. Also check the resistors near by.
Replace both the TIP35c and the TIP36c that are in that channel. Also check the resistors near by.
Tnx For Answer Sir
My Bro Have Exprience In maintenance Computers like Mainboard or...
He Try To fix Amplifier And Check every Thing In Circuit
Problem Show On this Part And When He Get Out The Transistor Amp Is Get out From Protecting And Worked...
TIP 36c IS Work For Now,Need To change That?
You should change the pair IMHO. When they short out they tend to damage the inside of the amp channel. These outputs can also damage the driver devices before them in the amp circuit so don't be surprised if you read higher then normal DC voltage on the speaker terminals after the amp is repaired. This is call DC offset. Its a sign that more then the outputs were damaged, and the other damaged parts are still inside the channel.
To test this read the DC voltage on the speaker terminals of each channel with no load connected and no RCAs connected, just the amp turned on and idling. If your repaired channel has a higher reading then there are some other parts still not right inside the amp.
0 to 5 milli-volts is like new, 5 to 15 milli-volts in still acceptable. 15 milli-volts and up is past most repair tech's limits of acceptable and serious signs of issues still in the channel. These are ball park numbers but they have served me well over the years.
I say don't skimp, replace both outputs and test. if test looks bad then re-investigate the repaired channel for other problem devices and replace them also if needed. In electronics its better to be complete and in-depth or it will come back to haunt you later on as an early failure.
To test this read the DC voltage on the speaker terminals of each channel with no load connected and no RCAs connected, just the amp turned on and idling. If your repaired channel has a higher reading then there are some other parts still not right inside the amp.
0 to 5 milli-volts is like new, 5 to 15 milli-volts in still acceptable. 15 milli-volts and up is past most repair tech's limits of acceptable and serious signs of issues still in the channel. These are ball park numbers but they have served me well over the years.
I say don't skimp, replace both outputs and test. if test looks bad then re-investigate the repaired channel for other problem devices and replace them also if needed. In electronics its better to be complete and in-depth or it will come back to haunt you later on as an early failure.
Tnx All Dudes For Helping...
Guys I change TIP 35C And Amp Get Out From Protecting
And I Check DC Voltage ON Out And Thats Show 0 Volt
Is There Any Thing I Should Check ?????
And Guys My brother Is Check Every Thing In Circuit And Only Thing Is Damaged Just TIP 35 C
Guys I change TIP 35C And Amp Get Out From Protecting
And I Check DC Voltage ON Out And Thats Show 0 Volt
Is There Any Thing I Should Check ?????
And Guys My brother Is Check Every Thing In Circuit And Only Thing Is Damaged Just TIP 35 C
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