[sdiy] TR-606 stuck on one step patterns?

[Tom Bugs]

Ah, no - that's the problem! - I *can't* change the pattern lengths!

Eg - in pattern write with clock stopped I can use the buttons to select 
a pattern. Pressing Run/Stop starts the clock going and step 1 flashes 
(I can then program/turn-off each drum hit on this single step). Usually 
I would press and hold the Function button and then select a Last Step, 
but this is not working...  The Scale slide switch also has no effect 
and this would be changed when the Function button is pressed while 
running.

Actually, when I press the Function button while running in pattern 
write it is lighting up the LED for step 9 (along with Step1 Led 
flashing with the tempo) but still it is stuck on a 1step pattern..

There's no battery backup in this as the battery case parts are missing 
at the moment. I don't *think* that'd affect things other than patterns 
not being saved on power down?

Cheers,
Tom

On 04/12/2010 16:20, Senso wrote:
> Sounds like the same problem that can happen to a TR-808. Just go in 
> programming mode and set the pattern length to 16 again. That helps in 
> 99% of the cases.
>
> Senso
>
> PS: Check the backup battery too. It never hurts. ;-)
>
>
>> I wondered if anyone could suggest any pointers for this TR-606 trouble:
>>
>> I got the machine in busted state a good few years ago - the back of 
>> the case / battery box a bit broken up and with small damage to the 
>> PCB corner near the power entry. After a few resurrection attempts I 
>> got it working again and it has been happy for a few years. I've not 
>> used it now for a few months, but when I came back to it again it has 
>> developed a problem - Run/Stop works fine, as does pattern select and 
>> the drum voices, but all patterns are stuck to 1-step lengths. The 
>> Function button (SW7 on the switch sub-board) does appear to be good, 
>> but I'm a bit stumped from there.
>>
>> If anyone has any pointers or experience with such a problem it'd be 
>> great to know. Dead CMOS? Dead central CPU? Electro cap problems?
>>
>> Thanks in advance for any help possible.
>> Tom
>

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