Convert Krell 300iL to European voltage

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#181
BAD Pics

Hi Coronado,


The Pics are taken to close, they are all out of focus!
Try to take new pics from a distance where all the components are clearly sharp! If you have a Tulip on your camera, use it, that way you'll be able to take pics much closer that on tele mode! Tulip on your camera is like Macro mode.


I hope this will help.



Best regards,


Audiofanatic 😉
 
#183
I have set up my prototype board and have successfully extracted the binary file (and .s19 file). I have located the address which sets the program in an indefinite loop. I have used jbug11 to speak to my programmer over Com1, I use Win XP. PCbug11 will not work due to too fast processor in modern computers.

Now to my problem:
jbug11 won't write to the EPROM addresses. I guess it has something to do with overlays or a check that all bytes in the EPROM area are $FF? The jbug11 command LD should according to the manual be able to write to EPROM.

Please help =)
 
#185
I have applied the 12v Vpp. But I haven't altered anything in the registers. I have found something about BPROT register in other infomation on the WWW. Did you, iampivot, also use jbug11? The dosumentation does not say anything about how to set registers 😛

The manual for the programmer is not very detailed and does not provide much help :/

Thanks =)
 
#186
Yes I think it was jbug11. The manual says "Writing to EEPROM is controlled by the value in the BPROT register, and this must be set appropriately by the user in advance of any commands which alter EEPROM. JBug11 does not alter BPROT automatically, although it can warn the user if it detects an inappropriate value."

You can try setting the register with the command

R BPROT=10

then do your write, then restore it with

R BPROT=1F

Let us know how you're going. I'd like to put together a simple howto guide with each necessary step, but it's been a while since I've done it myself.. (Does anyone know where to get hold of cheap Krell amps in the US these days?)
 
#188
I get this stupid error message:

LD "[MyDocs]\Krell SW\fix_final.obj" d3c2 <-- Address(es) overlap EPROM/OTP ROM

According to the manual it should be possible to use the LD command!! I tried to alter the BPROT but there is no difference...
 
#191
Did you verify that the program in your chip is the same as mine? Ie, the memory locations are exactly the same? In that case you can use an S19 file like this to program the chip;

S104D3BA006E
S9030000FC

Just put that in an file and call it eg. program.s19.
 
#195
KPS-30i

Hi Guys,
Just purchased a KPS 30i cdplayer/processor. The unit is desgnated for 115v-60Hz.
I live in Chile and we use 220v-50Hz . I connected it through a 220/110v transformer , but the unit dont light , dont spin .. its dead. Is possible that since we use 50hz the unit dont work?
Any easy conversion intenally?

Any help is welcome.
Thanks. Victor
 
#199
You don't get a replacement part, you patch the software on the microcontroller.

The procedure is the following: check with an oscilloscope if there's a 50hz or 100hz signal on the correct pin as described in one of my earlier posts, then disassemble the software, looking for the same check as outlined earlier, then patch the software so that the test is skipped.
 
#200
Here is the pic.
URL]


The label says : VRS 3.00 K.D.I.
(C) 1995.

NO REFERENCE TO 50 OR 60HZ.

The other chip is a motorola: xc56002 fc66
OF87L
QERJ9511.

Both chips are on the opposite side of the transformer and the ac input.

The switches are on the 1.1.2 position.

Hope this helps.
 
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