Schematic for a Line 6 Flextone III

[Bob W.]

I'm looking for a Flextone III service manual or something that gives the test procedures for the self check functions. The amp comes on all the LEDS light up then go out, nothing after that. I've tried the A and D channels reset procedure and the 4 lights come on but nothing happens. I realize Line 6 is a tough one but hoping some one out there can help. Thanks,

[Jazz P Bass]

About all you really can do is check the power supplies.
12 volt, 5 volt & 3.3 volt.

[Bob W.]

About all you really can do is check the power supplies.
12 volt, 5 volt & 3.3 volt.

Thanks, that I did. checked all the supplies and they were dead on. Bob W.

[nosaj]

Thanks, that I did. checked all the supplies and they were dead on. Bob W.

So go backwards from output then. Most chips if you can read them you can get the info sheet on them that tell you what they do. So you know where to check for audio at. Maybe it is making noise an not coming to speaker, output , etc?
Is there any voltage on the outputs? AC or DC?
nosaj

[Jazz P Bass]

Here is a link to the Line 6 Flextone II (the page is mislabeled as the III )
Link: LINE-6 FLEXTONE 3 SCH Service Manual free download, schematics, eeprom, repair info for electronics
It probably is not the same as the III.
But, it may give you some insight as to what the designers where doing. (crack?)
The main cpu drives two ic's that drive the LED's.
The main cpu needs a firm clock signal, so you may want to check that first.

[dmeek]

I have the complete manual for the Flextone 3. I don't remember where I found it.
It's 35M so I can't post it here. I've extracted the test procedure, an external
computer is needed for some of it.

Doug


This is what I get when I try to attach the file. Send me your email address in a PM


Fatal error:

Could not create file system directory to hold your attachment.

Unable to proceed with save while $errors array is not empty in class vB_DataManager_AttachmentFiledata in [path]/includes/class_dm.php on line 849

[Bob W.]

I have the schematics for the Flextone II, it is entirely a different beast. I appreciate the info tho. Thanks, Bob

[Bob W.]

So go backwards from output then. Most chips if you can read them you can get the info sheet on them that tell you what they do. So you know where to check for audio at. Maybe it is making noise an not coming to speaker, output , etc?
Is there any voltage on the outputs? AC or DC?
nosaj

There is more wrong than just the sound. The leds will not light when you turn the knobs either. I'm guessing if I can solve that problem the sound will come on. I even downloaded a flash ROM loader and I can't get that to load. Also, there are no voltages on the output. Thanks for your input, Bob

[dmeek]

I'll try the upload again.


http://music-electronics-forum.com/a...1&d=1368664962

[Bob W.]

I'll try the upload again.


http://music-electronics-forum.com/a...1&d=1368664962

Thank you very much for the information. I need to sit down now and give it a shot and see if I can get anywhere with it. I'll let you all know how it works out, thanks again, Bob

[dmeek]

Here is the schematic.


http://music-electronics-forum.com/a...1&d=1369540228

[Bob W.]

dmeek, Thank you very much for the schemo it is exactly what I need to finish the job. I really appreciate the help. Thanks again, Bob

[Bob W.]

Just to let everybody know, I ordered the sdram off Ebay , got them, installed them and the amp works perfectly. Thanks to all who helped with advice. Bob (Only 2 weeks from China)

[Jazz P Bass]

Just to let everybody know, I ordered the sdram off Ebay , got them, installed them and the amp works perfectly. Thanks to all who helped with advice. Bob (Only 2 weeks from China)

And which IC was that on the schematic?

[Bob W.]

When I ran the diagnostics the sdram test failed, doesn't say which one was bad tho. I had a hard time finding the IC's but did find them on EBAY. Replaced U11 and U12, both rams.