Please ensure Javascript is enabled for purposes of website accessibility Jump to content

Dl4 Dead Again


Recommended Posts

  • 2 months later...
  • 10 months later...

Hi. 

 

I've had a good track record with fixing dead DL-4s, I hope I can help.

 

Usual Disclaimer*** --- I'm not responsible if you mess up your DL-4.

 

A common issue is the EPROM chip not sitting right in the socket. 

 

You have to take on the back plate, you should see the little chip in the socket, on the PCB. It should say "V1.3" or something like that on the sticker.

 

Give it a press to see if it can do any further into the socket. Don't apply too much pressure.

 

Don't put the back plate on, leave it off.

 

Try the hard reset again - A + D while powering, or better yet; have the power connected and then insert the Mono Input. Try that a few times. If that doesn't work:

 

Get a small flat head screwdriver - I mean really small, what someone would use for repairing watches.

 

You'll need to take the EPROM chip out of the socket, inspect it, maybe clean the socket with contact cleaner, and then reinsert the chip.

 

In the upper right and bottom left of the socket, you'll see small openings. Put the screw driver there and slowly work at each corner of the chip, in the locations mentioned, to pry it out. BE VERY GENTLE.

 

Try what I said about and then reinsert the chip. Try the hard reset.

 

Sometimes I had to try it a few times but that has often done the trick.

 

If that doesn't work, it may be a power issue which takes more troubleshooting as well as taking the pedal apart and having a Digital Multimeter to test the voltages.

 

I hope you resurrect it!1

  • Like 1
Link to comment
Share on other sites

  • 2 years later...
  • 2 years later...
On 7/4/2014 at 10:25 PM, beedoola said:

Hi. 

 

I've had a good track record with fixing dead DL-4s, I hope I can help.

 

Usual Disclaimer*** --- I'm not responsible if you mess up your DL-4.

 

A common issue is the EPROM chip not sitting right in the socket. 

 

You have to take on the back plate, you should see the little chip in the socket, on the PCB. It should say "V1.3" or something like that on the sticker.

 

Give it a press to see if it can do any further into the socket. Don't apply too much pressure.

 

Don't put the back plate on, leave it off.

 

Try the hard reset again - A + D while powering, or better yet; have the power connected and then insert the Mono Input. Try that a few times. If that doesn't work:

 

Get a small flat head screwdriver - I mean really small, what someone would use for repairing watches.

 

You'll need to take the EPROM chip out of the socket, inspect it, maybe clean the socket with contact cleaner, and then reinsert the chip.

 

In the upper right and bottom left of the socket, you'll see small openings. Put the screw driver there and slowly work at each corner of the chip, in the locations mentioned, to pry it out. BE VERY GENTLE.

 

Try what I said about and then reinsert the chip. Try the hard reset.

 

Sometimes I had to try it a few times but that has often done the trick.

 

If that doesn't work, it may be a power issue which takes more troubleshooting as well as taking the pedal apart and having a Digital Multimeter to test the voltages.

 

I hope you resurrect it!1

I did exactly what you said here and it worked like like a charm,

.

 

Thanks

 

Bret

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...