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  • #31
    Re: I got a new amp today.

    Sorry I wasn't clearer about that. Those BIG ceramic resistors on the board underneath the Module board that I circled in the pink. If you identify them for me I may give some advice regarding them and the module boards. They may be something that other people are overlooking when trying to repair these amps.

    You may be able to actually order those boards but it's probably price prohibitive. Also for the above possibility , drop in and replace might not quite work.





    These are actually 10 Nanofarad capacitors.
    Last edited by GoldenVulture; 03-31-2019, 08:34 PM.
    sigpic

    - http://www.soundclick.com/bands/defa...?bandID=804435 -
    - https://soundcloud.com/mr-ds-bigband/tracks -

    Warning: May contain traces of NUTS

    Comment


    • #32
      Re: I got a new amp today.

      Sorry I missed the pink ha ha.
      Click image for larger version

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      Go buy my book. https://www.amazon.com/dp/198405564X

      Comment


      • #33
        Re: I got a new amp today.

        So here's what specifically happened when it blew.

        I had decided to try my e1 legendary amps in the effects loop.
        As I was working with the levels and whatnot on the amp 1 clean channel, I reached around the back and there's a switch/button to add db or -db in the effects loop.
        I pushed that button in and snap! I saw the spark from the fuse go, and smelled a burning smell.

        Went to hardware store replaced the fuse, (amp apart now on the bench) and plugged it back in and tried to power it on.... Bzzz fuse snapped again and smoke from the two ic units I am pointing to in pix.

        Don't know if that tells you anything but that's what happened.
        Go buy my book. https://www.amazon.com/dp/198405564X

        Comment


        • #34
          Re: I got a new amp today.

          Originally posted by 80's_Metal View Post
          Sorry I missed the pink ha ha.
          [ATTACH=CONFIG]97081[/ATTACH]
          Thanks but there's another two I think to the left under the output module board. I need to know what they are. That screw in the middle of the chip holds the modules in . Undo that if you can and lift up the module. you could even unplug it too.

          Chances are they are also .1 Ohm resistors which sit on the outputs of the modules. If they're not replaced it will most likely blow again. They're linked to the protection circuitry as well as the output modules.
          Click image for larger version

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ID:	5813428 I don't know if you can read this but if you look at output 1 and output 2 , there are 3 resistors connected to them labelled OR1, that's the ceramic resistors. [ OR1 = .1 Ohms ]

          Available modules from England.
          - https://www.proaudioservice.co.uk/pr...odule-tda7293/ -
          Last edited by GoldenVulture; 04-01-2019, 03:40 PM.
          sigpic

          - http://www.soundclick.com/bands/defa...?bandID=804435 -
          - https://soundcloud.com/mr-ds-bigband/tracks -

          Warning: May contain traces of NUTS

          Comment


          • #35
            Re: I got a new amp today.

            Originally posted by 80's_Metal View Post
            So here's what specifically happened when it blew.

            I had decided to try my e1 legendary amps in the effects loop.
            As I was working with the levels and whatnot on the amp 1 clean channel, I reached around the back and there's a switch/button to add db or -db in the effects loop.
            I pushed that button in and snap! I saw the spark from the fuse go, and smelled a burning smell.

            Went to hardware store replaced the fuse, (amp apart now on the bench) and plugged it back in and tried to power it on.... Bzzz fuse snapped again and smoke from the two ic units I am pointing to in pix.

            Don't know if that tells you anything but that's what happened.
            It appears they're really touchy when swapping things around and respond like I described further back. I'm guessing the guy that sold it to you did a fix but missed a few things. It looks like if you change much around while it's on or off, and there's power in the caps [ even after it's been turned off ] , they want to blow up.

            It appears if you have it on [ in working state ] , turn it off and change speakers without the power draining right out first , they'll blow up. Also very easy to short the outputs.
            Last edited by GoldenVulture; 04-01-2019, 12:27 AM.
            sigpic

            - http://www.soundclick.com/bands/defa...?bandID=804435 -
            - https://soundcloud.com/mr-ds-bigband/tracks -

            Warning: May contain traces of NUTS

            Comment


            • #36
              Re: I got a new amp today.

              Yes, from what I've been reading, you can't change anything with power on or kaboom. Which makes the amp worthless in a recording situation ha ha. Or a testing new stuff out situation....

              The resistor on the other end was identical to the one pictured, so I assumed the middle one was too.
              I can look when I get home tonight
              Last edited by 80's_Metal; 04-01-2019, 07:58 AM.
              Go buy my book. https://www.amazon.com/dp/198405564X

              Comment


              • #37
                Re: I got a new amp today.

                Originally posted by 80's_Metal View Post
                Yes, from what I've been reading, you can't change anything with power on or kaboom. Which makes the amp worthless in a recording situation ha ha. Or a testing new stuff out situation....

                The resistor on the other end was identical to the one pictured, so I assumed the middle one was too.
                I can look when I get home tonight


                May as well presume it is the same, most likely. They're probably damaged from from previous blowups
                Anyway those three need to be replaced too if you do a module fix and they're pretty critical when it comes to correct operation.
                sigpic

                - http://www.soundclick.com/bands/defa...?bandID=804435 -
                - https://soundcloud.com/mr-ds-bigband/tracks -

                Warning: May contain traces of NUTS

                Comment


                • #38
                  Re: I got a new amp today.

                  GV you are the man!
                  Go buy my book. https://www.amazon.com/dp/198405564X

                  Comment


                  • #39
                    Re: I got a new amp today.

                    So many questions and options here:

                    The website that has the modules only has 3 in stock.... F.
                    I Can't seem to dig any more up from any source. $136 for 4 modules.

                    OR I could just buy the chips, they're like 11 bucks each and either solder them in myself... (Risky)
                    Or take the modules to my local music shop guy and pay him to do it. Cheap!

                    Then if I get it running.... Do I keep it and never trust it and always be concerned about it?
                    OR sell it off?

                    I suppose knowing what I now know about these amps, I could just be very careful with it's operation.....

                    I could sell it off for $200 as a broken amp and still be good with that, the way that whole deal went down...

                    I do enjoy a challenge and learning more about amps and how they work.

                    My old Peavey sounded pretty good the other night ha ha ha less headaches for sure.
                    Last edited by 80's_Metal; 04-01-2019, 01:31 PM.
                    Go buy my book. https://www.amazon.com/dp/198405564X

                    Comment


                    • #40
                      Re: I got a new amp today.

                      Is that the new Marshall PC? Does it run Windows 10 then?
                      Lefty Lounge Lizard's Guitars & Amps Extravaganza

                      Fastest ears in the West

                      "People in general prefer stupidity and bull**** over intelligence and facts."

                      My Soundcloud

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                      • #41
                        Re: I got a new amp today.

                        Funny guy.

                        But those new code 100 models suck bad from what I've gathered. I haven't played one myself.
                        Go buy my book. https://www.amazon.com/dp/198405564X

                        Comment


                        • #42
                          Re: I got a new amp today.

                          Originally posted by 80's_Metal View Post
                          So many questions and options here:

                          The website that has the modules only has 3 in stock.... F.
                          I Can't seem to dig any more up from any source. $136 for 4 modules.

                          OR I could just buy the chips, they're like 11 bucks each and either solder them in myself... (Risky)
                          Or take the modules to my local music shop guy and pay him to do it. Cheap!

                          Then if I get it running.... Do I keep it and never trust it and always be concerned about it?
                          OR sell it off?

                          I suppose knowing what I now know about these amps, I could just be very careful with it's operation.....

                          I could sell it off for $200 as a broken amp and still be good with that, the way that whole deal went down...

                          I do enjoy a challenge and learning more about amps and how they work.

                          My old Peavey sounded pretty good the other night ha ha ha less headaches for sure.

                          OR I could just buy the chips, they're like 11 bucks each and
                          take the modules to my local music shop guy and pay him to do it. Cheap!
                          Some one experienced in soldering would be the go, those multi pin chips can be difficult.The ceramic resistors not so hard but they need to be done too [ I'm going to keep stressing this ]
                          sigpic

                          - http://www.soundclick.com/bands/defa...?bandID=804435 -
                          - https://soundcloud.com/mr-ds-bigband/tracks -

                          Warning: May contain traces of NUTS

                          Comment


                          • #43
                            Re: I got a new amp today.

                            Originally posted by 80's_Metal View Post
                            Funny guy.

                            But those new code 100 models suck bad from what I've gathered. I haven't played one myself.
                            It's crazy how different the guts look today versus the plexi/metal panel eras.
                            Lefty Lounge Lizard's Guitars & Amps Extravaganza

                            Fastest ears in the West

                            "People in general prefer stupidity and bull**** over intelligence and facts."

                            My Soundcloud

                            Comment


                            • #44
                              Re: I got a new amp today.

                              Quick correction . The resistors are actually .1 OHM
                              sigpic

                              - http://www.soundclick.com/bands/defa...?bandID=804435 -
                              - https://soundcloud.com/mr-ds-bigband/tracks -

                              Warning: May contain traces of NUTS

                              Comment


                              • #45
                                Re: I got a new amp today.

                                Should've gone with the ol' faithful MG100hdfx

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