Hi!
I wish to by a 390s from the States, problem: the voltege, does anybody how to make it work at V220? with power amp like 332 or 336 is quite easy! Please help me Thanks
Regards
Adriano
I wish to by a 390s from the States, problem: the voltege, does anybody how to make it work at V220? with power amp like 332 or 336 is quite easy! Please help me Thanks
Regards
Adriano
Basically, all Levinson equipment uses jumpers to set transformer primaries which are compatible with all voltages (visible on left in a picture). However, some of the equipment has also circuitry that monitors mains frequency (a chip on the right in a picture of ML390S).
In such case, even if you set primaries properly, you will get diplay message WRONG AC with a code. Apparently, when you contact Madrigal and give them that code, they will provide you with a new code which when entered through the remote will set the microchip allowing the equipment to operate with a new mains frequency (50Hz vs. 60Hz)
In such case, even if you set primaries properly, you will get diplay message WRONG AC with a code. Apparently, when you contact Madrigal and give them that code, they will provide you with a new code which when entered through the remote will set the microchip allowing the equipment to operate with a new mains frequency (50Hz vs. 60Hz)
Attachments
Hi!
thanks for fast replay, I have a 320s and, and this is what I done to make it work at 50Hz is a small board witch generates the frequency, see link.
Adriano
http://img176.imageshack.us/img176/9043/pict0530al2.jpg
thanks for fast replay, I have a 320s and, and this is what I done to make it work at 50Hz is a small board witch generates the frequency, see link.
Adriano
http://img176.imageshack.us/img176/9043/pict0530al2.jpg
Hi Adriano,
I noticed that the numbers are filed off the transistors / ICs. Since this looks like an interesting project, would you be willing to detail your circuit to our members?
-Chris
I noticed that the numbers are filed off the transistors / ICs. Since this looks like an interesting project, would you be willing to detail your circuit to our members?
-Chris
Sorry i'm not the one who made it, I'm just the 320s owner!! I wish I knew those numbers!! i just can tell you that is something witch give the 60Hz so you do not need a new code
Adriano
Adriano
It was a gamble but I've bought a ML390s in the US and did the conversion myself. There was no password code and it was as simple (for someone who studied older electronics, like my father) as moving a jumper to the correct position.
If you look closely at the following picture: http://www.marklevinson.com/image_library/390SOH.jpg you'll see a white jumper block (8 positions) with copper jumpers. On the picture the jumpers are currently set at 110v (starting from the top that's (2/3 and 5/6)) and should measure something like 27 ohm between line and neutral (that's where the voltage cable goes in).
For 220v there only needs to be one jumper between 4 and 5 and this should measure around 98 ohm. For the 240v configuration one jumper should be set to 1 and 2 and should measure 109 ohm.
Cheers,
Alexander
If you look closely at the following picture: http://www.marklevinson.com/image_library/390SOH.jpg you'll see a white jumper block (8 positions) with copper jumpers. On the picture the jumpers are currently set at 110v (starting from the top that's (2/3 and 5/6)) and should measure something like 27 ohm between line and neutral (that's where the voltage cable goes in).
For 220v there only needs to be one jumper between 4 and 5 and this should measure around 98 ohm. For the 240v configuration one jumper should be set to 1 and 2 and should measure 109 ohm.
Cheers,
Alexander
Hi Bebo,
Yes that simple. I really thought (reading all the stories) there was going to be a 50/60hz check. I even prepared for this and bought a Willem eprom programmer to start hacking (it's a AT29C010A 128k flash). But to my big surprise there wasn't.
And it sounds great 🙂
Cheers,
Alexander
Yes that simple. I really thought (reading all the stories) there was going to be a 50/60hz check. I even prepared for this and bought a Willem eprom programmer to start hacking (it's a AT29C010A 128k flash). But to my big surprise there wasn't.
And it sounds great 🙂
Cheers,
Alexander
hello, someone can give an help? I purchased an used preamp Mark Levinson 320s from a seller in U.S.A.. I live in Italy . I received the package this morning from ups and before to turn on I set the preamplifer to 230 / 240 volts ( here in Italy the voltage is 230 /240 ).
When I turned on the preamplifier, it asked me a key of 5 numbers or I can't use it !!! I
don't know that code. What do you think I can do?
Thanks for your help,
Andrea
When I turned on the preamplifier, it asked me a key of 5 numbers or I can't use it !!! I
don't know that code. What do you think I can do?
Thanks for your help,
Andrea
Contact Madrigal in States and they should help you. The service facility is located off Madrigal Center, in Massachusetts. The person to speak there is Blair at 781-769-4337.
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