I think that is the sound circuit. The XC56002FC* is a DSP chip.
Are there any other chips around?
Are there any other chips around?
Hi:
I am living in Chile 220v/50hz and i bought Krell Kav400xi with same chip 1.06 60hz.
i do not understant how you can power on the krell with one transformer 230/115v in Norway if you have 50hz too.
You say first connect with transformer and power normal and after switch voltage to 2-2-2 240v and the unit lock with Fer error.
When you reconnect the unit at 115v with switch 2-1-2 your amp power on normal?
I think is impossible because the chip is sensing the frecuency and you only convert the voltage , not frecuency.
Please explain me how can i power on my krell , because this is locked.
Kind Regards
I am living in Chile 220v/50hz and i bought Krell Kav400xi with same chip 1.06 60hz.
i do not understant how you can power on the krell with one transformer 230/115v in Norway if you have 50hz too.
You say first connect with transformer and power normal and after switch voltage to 2-2-2 240v and the unit lock with Fer error.
When you reconnect the unit at 115v with switch 2-1-2 your amp power on normal?
I think is impossible because the chip is sensing the frecuency and you only convert the voltage , not frecuency.
Please explain me how can i power on my krell , because this is locked.
Kind Regards
Hi,
I think the chip is detecting both frequency and voltage and comparing these readings to the set up data for the country it was first sold in.
I think that you have to disable the chip to prevent it sending an error signal downstream.
Then, you can select voltage to the correct windings in the transformer.
I think the chip is detecting both frequency and voltage and comparing these readings to the set up data for the country it was first sold in.
I think that you have to disable the chip to prevent it sending an error signal downstream.
Then, you can select voltage to the correct windings in the transformer.
Hugin said:
Hi Hugin:
I do not understand , i have the sam situation but when the amplifier lock on , never power normal again.
Somebody know how read the program on microprocessor or know what pin sense the 50 hertz for put an external clock
krell kps 30i voltage/frequency conversion
Nice to see another guy from Chile here.
Dear Impivot, pictures of the power circuit below.
Looks like there is no 50/60 detector , but I only opened from top not bottom. Where is supposed to be that chip?
IMG]
![URL]](/community/proxy.php?image=http%3A%2F%2F%5BURL%3Dhttp%3A%2F%2Fimajr.com%2FMis_im%C3%A1genes_003_39995%5D%5BIMGDEAD%5Dhttp%3A%2F%2Fimajr.com%2Fth%2FMis_im%C3%A1genes_003_39995.jpg%5B%2FIMGDEAD%5D%5B%2FURL%5D&hash=db9af71713e8c5f378b5d4a9adb17a4b)
.
![URL]](/community/proxy.php?image=http%3A%2F%2F%5BURL%3Dhttp%3A%2F%2Fimajr.com%2FMis_im%C3%A1genes_004_39996%5D%5BIMGDEAD%5Dhttp%3A%2F%2Fimajr.com%2Fth%2FMis_im%C3%A1genes_004_39996.jpg%5B%2FIMGDEAD%5D%5B%2FURL%5D&hash=7d973270b82957cb7318583c2a1cc39c)
Nice to see another guy from Chile here.
Dear Impivot, pictures of the power circuit below.
Looks like there is no 50/60 detector , but I only opened from top not bottom. Where is supposed to be that chip?
IMG]
An externally hosted image should be here but it was not working when we last tested it.
[/IMG] .
I didn't think the earlier generation of Krell equipment had the frequency count at all. But if they do, and they use the motorola 6811 family of microcontrollers, then it should be possible to fix it using the methods described earlier in this thread (i think around page 13-14 or later).
Note that the positions of the switches or 230v in a 300iL might not be the same as the positions required for a different type of Krell equipment. So I'd be cautious turning on any equipment unless you've gotten confirmation from people in the know.
Note that the positions of the switches or 230v in a 300iL might not be the same as the positions required for a different type of Krell equipment. So I'd be cautious turning on any equipment unless you've gotten confirmation from people in the know.
Unlocking Kav-400xi
But you think the address of microprocessor on kav400xi is programable or not? Or you need a new CPU?
I want to go for hardware solution with external oscillator, please help me with this
ogs
philbyx said:iampivot
This is a very good work!!!
My method is more "hardware" but works fine too 😀 :
In a 300fpb, it needs two cmos oscillator, one by amplifier, because there is two processors independant in it, on each way (double mono).
Each mod is supplied by a different 5 volts (care of ground loops).
Made a HTS 7.1 and a Showcase processor too. allways 60 Hz oscillator. Init is good. Just say on the display "60 Hz version".
I'm looking for the principle and cabling of the Krell "remote link", nobody knows ?
I want to start the 300fpb with the 12vdc trigger of the HTS 7.1, but the 300 has only "remote link" 5 pins din socket. How to do ?
Philippe
iampivot said:
But you think the address of microprocessor on kav400xi is programable or not? Or you need a new CPU?
I want to go for hardware solution with external oscillator, please help me with this
ogs
Re: Unlocking Kav-400xi
The microcontroller in the 400xi is programmable. I'm not sure what microcontroller sits in the KPS 30i, it was hard to tell from the pictures, but I expect it to be an earlier version of the same motorola 6811 family, thus also easily programmable.
I think a hardware solution is a bit more involved.
In any case, fixing this requires someone knowledgeable about electronics. You need an oscilloscope at a minimum. If you can't get access to proper equipment and are knowledgeable enough to use it or know someone local to you that does, then I think you should prob save yourself the time, money and trouble and sell your cd player.
ogssound said:
The microcontroller in the 400xi is programmable. I'm not sure what microcontroller sits in the KPS 30i, it was hard to tell from the pictures, but I expect it to be an earlier version of the same motorola 6811 family, thus also easily programmable.
I think a hardware solution is a bit more involved.
In any case, fixing this requires someone knowledgeable about electronics. You need an oscilloscope at a minimum. If you can't get access to proper equipment and are knowledgeable enough to use it or know someone local to you that does, then I think you should prob save yourself the time, money and trouble and sell your cd player.
Hi iampivot,
I have a 400XI locked at 60Hz. "400XI V1.06 60Hz" is printed on the chip label. I saw the pix from your previous post, yours was "300IL V1.06 60Hz", right? Since have the same microchip version, the codes should be similar if not the same, right?
I'm still waiting to get my hand on a 64HC11 Programing board now. Once I get it, I should be able to read the codes and see if they are the same.
One quick question on the re-programing part. In your previous post, you said "Setting the address d3d9 to 0x00 fixed the amplifier." Do you mean by changing "D3B9 20FE BRA $D3B9" to "D3B9 0x00 BRA $D3B9" or "D3B9 0x00"? Or can I change it to "D3B9 20FE BRA $D3BB"? (D3BB is the next step in the codes you posted). Thanks for your help!
I have a 400XI locked at 60Hz. "400XI V1.06 60Hz" is printed on the chip label. I saw the pix from your previous post, yours was "300IL V1.06 60Hz", right? Since have the same microchip version, the codes should be similar if not the same, right?
I'm still waiting to get my hand on a 64HC11 Programing board now. Once I get it, I should be able to read the codes and see if they are the same.
One quick question on the re-programing part. In your previous post, you said "Setting the address d3d9 to 0x00 fixed the amplifier." Do you mean by changing "D3B9 20FE BRA $D3B9" to "D3B9 0x00 BRA $D3B9" or "D3B9 0x00"? Or can I change it to "D3B9 20FE BRA $D3BB"? (D3BB is the next step in the codes you posted). Thanks for your help!
stevexyz said:
The microcode for a 300IL is not exactly the same as for the 400XI, since the latter has a volume wheel, and the software has extra code to support that.
It was only replacing the FE value with a 00 value. For the 300IL, it was the location D3D9 that had that value yes. It might be a slightly different location for the 400XI.
Hope this cleared the confusion.
In any case, if something goes wrong, you can buy an empty 68hc711 at any electronics supplier and program it from scratch if something goes wrong. Just read off the complete EPROM and PROM areas to disk before programming.
iampivot said:
"D3D9"? wasn't it "D3B9" in your original post? I should change "D3B9 20FE BRA $D3B9" to "D3B9 2000 BRA $D3B9", right? If I needed to change "D3D9" instead, would you please kindly post the exact code string of that address? Thanks!
stevexyz said:
D3D9 is the address location. Look at the instruction at that address, it simply says: go back to instruction D3D9. The value at that location representing that instruction is 20FE. This needs to be changed to 2000, so only one byte changes from FE to 00.
Great! I'll try to locate the address for this instruction after I get the programing board in hand then. Thanks again!
Dear JAMPIVOT
I cant find the board programmer, can you indicate me exactly model and name
Regards
ogssound said:
Hmm, it seems the company I got mine from doesn't market any board for this microcontroller anymore. There should be similar out there though.
Maybe this one will be suitable: http://www.newmicros.com/index2.php...MIN-0022A&id=F21KhQETrelOBtTY3QDcwYV12n6BSeW8
It can take a 68hc711e9, and prob be used in any of the four modes the microcontroller operates in, by setting dip switches. I've never used it myself though, so I cannot promise anything. Search google for "EVBU replacement" or 68hc11 evaluation board. There should be a number of options available at $50-100.
Some other candidates:
http://www.evbplus.com/evbplus_hc11_68hc11.html http://www.evbplus.com/minidragonplus_hc12_68hc12_9s12_hcs12.html
http://www.technologicalarts.ca/catalog/index.php?cPath=21_54
This one in particular looks promising, and cheap ($30): http://www.technologicalarts.ca/catalog/product_info.php?cPath=21_54&products_id=29
These ones can prob also work:
http://www.newmicros.com/index2.php...A-BUFFALO&id=F21KhQETrelOBtTY3QDcwYV12n6BSeW8 (seems to have dip switches to set correct operation mode).
http://www.technologicalarts.ca/catalog/product_info.php?cPath=21_54&products_id=29
http://www.newmicros.com/index2.php...A-BUFFALO&id=F21KhQETrelOBtTY3QDcwYV12n6BSeW8 (seems to have dip switches to set correct operation mode).
http://www.technologicalarts.ca/catalog/product_info.php?cPath=21_54&products_id=29
Hi iampivot, I have never worked with this kind of electronic programing before. I really don't want to ruin the chip. So can you mod the chip for me? I can pay for your service (via paypal) if you like. Thank you!
Thanks Jampivot, doo you known the address of Krell Kav400xi for work to 50 hertz and if is possible reprograme this unit ?
You need to load the content of the microcontroller into the program you're talking to the microcontroller with. It can disassemble the content for you, and you then need to look for a pattern similar to the one I've shown in earlier pages.
There's no easy way to do this. If you cannot understand what's needed from my previous posts, there's no way you'll be able to do this yourself.
And I'm sorry, I don't do this as a paid service.
There's no easy way to do this. If you cannot understand what's needed from my previous posts, there's no way you'll be able to do this yourself.
And I'm sorry, I don't do this as a paid service.
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