Author Topic: Line 6 DL-4 troubleshooting  (Read 1521 times)

Carlos Best

Line 6 DL-4 troubleshooting
« on: March 19, 2014, 09:33:36 AM »
I'm trying to troubleshoot a DL-4 I have.
The previous owner conected a 110v walwart into a 220v socket, and he had to rebobinate the primary. So he used it with batteries.
When he got the repaired transformer the the DL-4 wont turn on plugged.

I opened and the 1000uf capacitor C40 was blown, and the power section was making a faint buzz when plugged (???)
I replaced it and the buzz went out. But the pedal never started again, neither with AC or batteries.

I measured everything and it seems ok, only the out of the doubler is a bit "weak" measuring 6.06v instead of 6.6v
Also the dps is running a bit warm, (not hot)

The rest of the voltages are ok.
I also tried to reset the unit to no avail

I'm using this schem.

Any advice??

Carlos Best

Re: Line 6 DL-4 troubleshooting
« Reply #1 on: March 20, 2014, 02:39:44 PM »

I supose that I have good news (???)
I left the AC power section off by disconecting the 3,6 v zener and used the bateries.

Let it rest for one day and when I plug the input the pedal light up light a christmas tree  :icon_smile:
The only problem is that if I want to repeat the procedure the pedal wont  lit again until I let it rest for a while

Anyone can point what do I check for that intermitance?

I havent tried with a regulated 6v in place of the 4 batteries. Maybe those are the problem