Original DL4 freezing

[stevenrb718]

I have an original DL4 that freezes up shortly after freshly being turned on. Usually cycling through the effects quickly will lock it up. Restarting the pedal will fix it and it might freeze again. After maybe a minute of being on, the pedal will function fine and won't freeze up anymore. I've checked all of the bigger caps and they're fine. This has to be a capacitor not charging up quick enough, right?

[The Dude]

I asume the Line 6 DL4? If so, these have a known issue with the EPROM chip making poor connection in the socket. I'd try CAREFULLY removing the chip, clean socket pins with Deoxit or similar, and reinstalling the chip.

[stevenrb718]

I asume the Line 6 DL4? If so, these have a known issue with the EPROM chip making poor connection in the socket. I'd try CAREFULLY removing the chip, clean socket pins with Deoxit or similar, and reinstalling the chip.

Sorry, yes the L6. EPROM and socket have already been cleaned and tested fine.

[The Dude]

Here's the schematic.

Delay - DL4 Stomp Box Modelers.pdf

[g1]

Lots of supply lines in there, they all need to be stable when cold. VL,VA,VD at U4; +/-5V from U15

[stevenrb718]

All voltages are spot-on immediately at startup. I'm tempted to heat up ICs like the 56364 before powering up and see if the freezing issue still occurs. I'm not sure what it could be besides a hold-up in voltage or temperature.