Yamaha A-760...no one under 30 needs to read this!

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • romansroad
    Senior Member
    • Feb 2010
    • 123
    #1

    Yamaha A-760...no one under 30 needs to read this!

    So I always wanted this amp, or any in the series of brushed aluminum with the uber-cool square lighted buttons. I was at the Dallas computer swap meet ( known to the locals as "under the bridge") and picked up this amp for $15. It has a bit of a moisture issue, and one of the Zeners had water sitting in the lead hole and actually corroded the lead wire in two. I think the diode itself is likely okay, but am planning a full restoration. I've found the service manual and schematic online, but they are poor quality scans and lack sufficient resolution. I have seached Elektotanya, Eservice info etc and there is only one bad copy of the same manual floating around.
    Thus, my question. Does anyone have an original, or a readable copy I could purchase or are there other references/sources I've overlooked? Done the Ebay thing...no joy. Any help or insights would be welcome.
    Tags: None
    • Agent24
      I see dead caps
      • Oct 2007
      • 4913
      • New Zealand
      #2
      Re: Yamaha A-760...no one under 30 needs to read this!

      I've had the same problem too. I get the impression that a lot of people do not know how to use scanning software, or understand what image compression is.
      "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
      -David VanHorn

        Comment

        • romansroad
          Senior Member
          • Feb 2010
          • 123
          #3
          Re: Yamaha A-760...no one under 30 needs to read this!

          You're so right. I would have been ticked off if I had spent money on these copies as they were so poor. Looks like someone just slapped an old manual on a scanner and hit the button....UGH.

            Comment

            • Agent24
              I see dead caps
              • Oct 2007
              • 4913
              • New Zealand
              #4
              Re: Yamaha A-760...no one under 30 needs to read this!

              I just downloaded the manual from Eserviceinfo.. It's not as bad as some I have seen, At least the schematic is mostly readable, anyway.

              The exploded view is a bit pathetic though.
              "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
              -David VanHorn

                Comment

                • romansroad
                  Senior Member
                  • Feb 2010
                  • 123
                  #5
                  Re: Yamaha A-760...no one under 30 needs to read this!

                  if you're looking at the A-760, the zener I'm worried about is directly under a larger blob of text! Just like the bug that splats on your windshield is always directly in front of the driver's face.....

                    Comment

                    • Agent24
                      I see dead caps
                      • Oct 2007
                      • 4913
                      • New Zealand
                      #6
                      Re: Yamaha A-760...no one under 30 needs to read this!

                      Well, It would be, wouldn't it?

                      Do you just want to know what it is so you can get a replacement?

                      I saw a thread on diyaudio about one of those amps, maybe that person can give you some info on what you need...
                      "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                      -David VanHorn

                        Comment

                        • romansroad
                          Senior Member
                          • Feb 2010
                          • 123
                          #7
                          Re: Yamaha A-760...no one under 30 needs to read this!

                          I was planning a full restoration, and the zener may be fine as I haven't had a chance to test it yet. I'll look on Diyaudio for that thread. Thanks!

                            Comment

                            • Agent24
                              I see dead caps
                              • Oct 2007
                              • 4913
                              • New Zealand
                              #8
                              Re: Yamaha A-760...no one under 30 needs to read this!

                              This is what I found: http://www.diyaudio.com/forums/solid...a-760-a-2.html

                              There was also this: http://gigapod.free.fr/Yamaha_A760.html

                              Hopefully the people behind those pages may be able to help you
                              "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                              -David VanHorn

                                Comment

                                • romansroad
                                  Senior Member
                                  • Feb 2010
                                  • 123
                                  #9
                                  Re: Yamaha A-760...no one under 30 needs to read this!

                                  Thanks!

                                    Comment

                                    Previous template Next

                                    Related Topics

                                    Collapse
                                    • SMDFlea
                                      Copy DMI info easily with Hex editing software and Macro script
                                      by SMDFlea
                                      Copying DMI information from an old bios to a new one is difficult for some members, often they have no experience with a hex editor,or some that have tried find it too hard.There is an option to make things easier for those members so that they don`t need to post their own bios backup for the DMI copying.

                                      Experienced bios modding members can help by posting in other threads the DMI offsets,macro script generated by the software and a download link to the software at softpedia mentioned in this guide,or post your macros in the comments here with a link to the bios request thread ....
                                      02-28-2023, 02:14 PM
                                    • Caimano
                                      Need to copy DMI info for HP ProBook 650 G2 Bios
                                      by Caimano
                                      UPDATE of JANUARY 5th : I am cancelling this post because problem has been solved by creating a new bios starting from the old one with correct dmi and cleaning ME. everything works fine . thanks anyway

                                      Hi, I am replacing a motherboard circus-6050A2723701-MB-A02 to an HP 650 G2 laptop because the original one was faulty. I bought and repaired a used MB which works fine now with its BIOS, but I wanted to copy the DMI data from the old to the new MB. I created with Flash Image Tool a new bios starting from the old original chip , cleaned ME region and new updated dump region extracted...
                                      01-03-2024, 05:19 AM
                                    • sanalelevenstar
                                      Yamaha RX-V485 Wn9711 Update
                                      by sanalelevenstar
                                      Help Needed: Yamaha RX-V485 Network Issue After Firmware Update (WN9711 Error)

                                      Hi everyone,

                                      I'm facing an issue with my Yamaha RX-V485 receiver. During a firmware update, the process failed, and now the USB, Bluetooth, and network functionalities are not working. Occasionally, the receiver displays the error code WN9711.

                                      I came across Yamaha Technical Bulletin No. 0103, which describes a similar issue for models like the RX-V4A, RX-V6A, and RX-A2A. According to the bulletin, the issue can be resolved by shorting soldering points (e.g., J260 for RX-V4A or...
                                      12-04-2024, 04:32 AM
                                    • jjne
                                      Yamaha RX V675 sound issues
                                      by jjne
                                      I have an old Yamaha RX V675 receiver which is starting to develop issues with the sound, although it doesn't quite match up with what folk normally report with these.

                                      From cold, the sound cuts in and out. When this happens the amp is losing sync with the optical input (speaker graphic disappears from the front panel). But this is not resolved by putting the unit into pure direct mode. After a couple of minutes this resolves, although there are occasional clicks from the speakers after that.

                                      At first I thought it was either a speaker relay or the DSP, but I don't think...
                                      Today, 07:01 AM
                                    • AlexVG
                                      YAMAHA CLP-550 without of sound
                                      by AlexVG
                                      Hi.
                                      I have an old YAMAHA CLP-550 without sound. (Some times I can get some kind of noise or distorted sound)
                                      I have replaced all green marked elements, but it gave me nothing.
                                      The IC12 chip LC9116A-105 (red marked) remains under suspicion yet.

                                      But it is custom YAMAHA's chip, and I can't find any information about it.
                                      Maybe somebody came across with the same issue?
                                      Any information will be very useful. I will be very appreciated.
                                      Thank you....
                                      06-08-2025, 09:29 AM
                                    • Loading...
                                    • No more items.
                                    Working...