People, good afternoon! Sorry for the OffTop. Help please. My KSA 300 is under repair. Tell me the number of the chip as in the photo, which analog can be found so that it is like from the factory. And the number of the flat oval transistor on the right (where many).please. If you can, please show the original photos from your amplifiers. Sorry for my English. All the best/Users/maksim/Desktop/16fc5bd3-113c-4b47-8234-2c14c5ea3df8.JPG
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People, good afternoon! Sorry for the OffTop. Help please. My KSA 300 is under repair. Tell me the number of the chip as in the photo, which analog can be found so that it is like from the factory. And the number of the flat oval transistor on the right (where many).please. If you can, please show the original photos from your amplifiers. Sorry for my English. All the best)
I think this leads to nowhere.
Most easy for the one who repairs the unit would be download the Service and or the repair manual. Use google to find. :
Service Manaul KSA 300 - Google Search
With guessing I doub't that you will be able to repair the Amplifier.
With this it's more accurate and easy to repair, then blindfold.
The second Picture looks to me as these are THERMISTORS or NTC Resistors eventually only Capacitors, can't see it very good. But sure not Transistors
Unless you really know what you are doing, my advice would be leave it to trained Service Technician to repair that Amp.
Most easy for the one who repairs the unit would be download the Service and or the repair manual. Use google to find. :
Service Manaul KSA 300 - Google Search
With guessing I doub't that you will be able to repair the Amplifier.
With this it's more accurate and easy to repair, then blindfold.
The second Picture looks to me as these are THERMISTORS or NTC Resistors eventually only Capacitors, can't see it very good. But sure not Transistors
Unless you really know what you are doing, my advice would be leave it to trained Service Technician to repair that Amp.
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Thank you for your answer! The master has an amplifier. He does not know what the chip is there and what it is responsible for (the one on the red small board) It works, but I want to remove it and make it like a factory or an analog. The master can't find the service manual either. That's why I turned to you for help, dear ones..I need a photo with a number and numbers that is in the original, to find the same or pick up an analog. And what is he responsible for?
Thank you for your answer! The master has an amplifier. He does not know what the chip is there and what it is responsible for (the one on the red small board) It works, but I want to remove it and make it like a factory or an analog. The master can't find the service manual either. That's why I turned to you for help, dear ones..I need a photo with a number and numbers that is in the original, to find the same or pick up an analog. And what is he responsible for?
check my Post you will find a link where you can download that Service Manual.. all you need to do is clicking the link
Click this LINE BELOW it will lead you GOOGLE SERVICE MANUAL
Service Manaul KSA 300 - Google Search
Or download it here
ksa 300s - Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics
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No results(
I do not know where to find the marking of the original chip and where to get the firmware of the chip. Maybe someone here has a ksa300s and will take a photo of the chip in their amplifier? Please help me a lot!!
May you will start to tell us what's acutally is the problem of the amplifier..
Anyway.
In the picture you took, the frist Picture.
I can see a number printed on top of it.
Write down that number and post it here.
Is this the original CHIP? Even if you think that this is not original then post the number of it.
Again, if you or whoever do not have the SKILLS to repair, then do not attempt to repair. it makes it only worse.
May someone else here can help you instead.
Anyway.
In the picture you took, the frist Picture.
I can see a number printed on top of it.
Write down that number and post it here.
Is this the original CHIP? Even if you think that this is not original then post the number of it.
Again, if you or whoever do not have the SKILLS to repair, then do not attempt to repair. it makes it only worse.
May someone else here can help you instead.
I don't think he is the doing the repair himself. "Master" = repairman.
There is a Motorola processor in these amps and perhaps this is what the picture shows. It does general housekeeping but more importantly it checks the line frequency so that cheap US imports cannot be used in expensive Europe 😀
This issue is easy to circumvent but of course the OP needs to establish if this is what the Master is fighting.
Pre-programmed processors are only available from Krell.
@analog_sa
Quote:"
There is a Motorola processor in these amps and perhaps this is what the picture shows. It does general housekeeping but more importantly it checks the line frequency so that cheap US imports cannot be used in expensive Europe " end quote
The chip has a number and I'm quite positive that one will find the number with Google what kind of chip this is.
that's why I wrote what I wrote. the same thing is for the second Pic, with these I think Thermistor. If the guy who is repairing that amp is a repairmen what this is, because he has that part in front of him, and if he should know what a thermistor looks like, then he should know how to use Google, if he hasn't access to other Databases.
And he is asking for help, but for me it seems, that he don't like to help himself, that he is rather happy with help of others. I'm sure as long as there is a number on the chip even when it's remarked by Krell, then there is one on the internet, who has already the documentation out there. Krell isn't Apple and Krell isn't Audio Research, who sanding off the numbers on their Transistors and put their own Color Code on it..
May if he would explain what is wrong with that amp in the first place then I think there are enough Guys and Specialists here on this forum who are glad to help.
The last few hours on Easter Holidays are nearly over here..
Regards
Chris
Quote:"
There is a Motorola processor in these amps and perhaps this is what the picture shows. It does general housekeeping but more importantly it checks the line frequency so that cheap US imports cannot be used in expensive Europe " end quote
The chip has a number and I'm quite positive that one will find the number with Google what kind of chip this is.
that's why I wrote what I wrote. the same thing is for the second Pic, with these I think Thermistor. If the guy who is repairing that amp is a repairmen what this is, because he has that part in front of him, and if he should know what a thermistor looks like, then he should know how to use Google, if he hasn't access to other Databases.
And he is asking for help, but for me it seems, that he don't like to help himself, that he is rather happy with help of others. I'm sure as long as there is a number on the chip even when it's remarked by Krell, then there is one on the internet, who has already the documentation out there. Krell isn't Apple and Krell isn't Audio Research, who sanding off the numbers on their Transistors and put their own Color Code on it..
May if he would explain what is wrong with that amp in the first place then I think there are enough Guys and Specialists here on this forum who are glad to help.
The last few hours on Easter Holidays are nearly over here..
Regards
Chris
On the amplifier, the left channel stopped working, when turned on, there was a click and the left channel went into overdrive and immediately became very hot. after the click, the Twitter on the speaker burned down (left channel) I sent it to the master and at the same time make a recap. I ordered the containers (kendeil, nichicon, vishay), and for small things, the replacement of non-factory small things. This chip, it works, but I want to remove this hand made and put the factory one. I need its label and name. I can't find it, and neither can the master. Can you help me? Thank you very much to everyone for responding
If Speaker Burning then you will need to check output Transistors.
Take DVM and measure DC VOLTAGE across the output Terminal,
In good STATE it must be 0.0000Volts DC! This is measured from Plus Terminal to Minus Terminal at the SPEAKER PORT of the side which fails.
Hook up the DVM and switch on the AMP for 10 Seconds should show if this is the case.
Please POST THE NUMBER on that CHIP which you have build in the AMP. the one from PICTURE 1.
I can see there is a NUMBER printed on top, so either a good Photograph or else note it down as you can read it. And then PLACE IT HERE EXACTLY PLEASE.
Then we will advance to the next Step.
Do you except the LABEL = KSA - 300 - see or have found any other LABELS or some SUB MODEL NUMBER OR LABELS? then place them here.
Everybody here is happy to help you but only with these minimal Information you provide, it is very complicated to help.
Take DVM and measure DC VOLTAGE across the output Terminal,
In good STATE it must be 0.0000Volts DC! This is measured from Plus Terminal to Minus Terminal at the SPEAKER PORT of the side which fails.
Hook up the DVM and switch on the AMP for 10 Seconds should show if this is the case.
Please POST THE NUMBER on that CHIP which you have build in the AMP. the one from PICTURE 1.
I can see there is a NUMBER printed on top, so either a good Photograph or else note it down as you can read it. And then PLACE IT HERE EXACTLY PLEASE.
Then we will advance to the next Step.
Do you except the LABEL = KSA - 300 - see or have found any other LABELS or some SUB MODEL NUMBER OR LABELS? then place them here.
Everybody here is happy to help you but only with these minimal Information you provide, it is very complicated to help.
The tweeter burnt out.... DC can't do it; No pasarán 🙂
It's the high freq. oscillations that did it.
It's the high freq. oscillations that did it.
Unfortunately, the master's amplifier is disassembled. We are waiting for the capacity, we will not be able to check it. I think the master should have checked it out. I repeat that the chip that is worth it, it works, but I want to remove this hand-made, because I make the amplifier for myself. I really like the sound of this amp. The non-factory chip number that costs ATMEL AT90S2313-1 OPI
Thanks)))
Thanks)))
If you have the opportunity, could you take a few detailed photos of the front panel inside, how this chip should stand correctly, and a photo of the inside of the arc side (second photo)
Moved OT posts to new thread.
@Maksimuss8885: please do not hijack others' threads. Open a new one instead.
Yes of course you are right.
Yea I didn't read it that well. I have seen many amps oscilating at the output and all of them turned on after wards.
Also have seen Tweeters melting down just because of bad Networks of low end Caps at tweeter side.,