Guys!
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.
(http://music-electronics-forum.com/attachments/28059d1395196163-dl4_ps.jpg)
Any advice??
Guys
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