ONKYO TX-SR607 ; FL Tube LCD Replacement ?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • ricco75
    New Member
    • Feb 2021
    • 2
    • FRANCE
    #1

    ONKYO TX-SR607 ; FL Tube LCD Replacement ?

    Hello
    I have bought few years ago a ONKYO TX-SR607.
    No problem with it since one month..
    Everything working well except LCD... i have a black screen.
    I have found this post :

    https://www.justanswer.com/electroni...splay-not.html

    this schematic information

    https://www.commentreparer.com/doc/15372/onkyo.pdf

    I have check the resistance R950 and no problem with it i have replace it by a new one : same
    I have control on Q7002 tension and i have 4.1V

    I think electric my problem is FL tube inside.




    Is someone have try to change it ?
    It is possible ?

    Thanks
    Last edited by ricco75; 02-23-2021, 04:57 PM.
    Tags: None
    • redwire
      Badcaps Legend
      • Dec 2010
      • 3900
      • Canada
      #2
      Re: ONKYO TX-SR607 ; FL Tube LCD Replacement ?

      It is common to have bad solder joints at the tube because the pins are made of Kovar and do not solder easily. Or the power transformer pins have bad solder connections, or at the middle board.

      For a dead fluorescent display, check that the tube has power to the filament. You can also see the lines glow orange in a dark room. I guess it should be about 6VAC between pin 1, 62 on the tube FLAC1, FLAC2 from the AMP PWB with R950 then P950, P951 on big transformer T901. It should go to the power transformer winding S2. I had one amp with a bad solder joint at the transformer's pins (varnish). You have to trace it back, or measure ohms for each lead from display to transformer. - BUT the low winding and filament resistance can fool you into thinking the connection is good.

      If the tube has air in it, the getter will turn white.
      Last edited by redwire; 02-26-2021, 12:37 AM.

        Comment

        • redwire
          Badcaps Legend
          • Dec 2010
          • 3900
          • Canada
          #3
          Re: ONKYO TX-SR607 ; FL Tube LCD Replacement ?

          Another note, the Onkyo has three step brightness control (DIMMER button) on the remote and see what that does.

            Comment

            • stj
              Great Sage 齊天大聖
              • Dec 2009
              • 30931
              • Albion
              #4
              Re: ONKYO TX-SR607 ; FL Tube LCD Replacement ?

              look for electrolytic caps connected with it.
              if you find one, try using a 1uf polyester in it's place.

                Comment

                Previous template Next

                Related Topics

                Collapse
                • redwire
                  Onkyo TX-SR607 replacement volume control encoder
                  by redwire
                  I had an Onkyo SR607 with a volume control encoder not working, turning the knob up the volume number would move around crazy and not work reliably.
                  Took it out and apart and no, it's not oxide or cleaning, lube required etc.- the metal is simply worn out. It's a 30mm part with metal bushing.

                  Volume control encoder Onkyo P/N 25065655W, Alps EC12E2425 is some oddball variant I could not find. I did the dig and tried replacement part Alps EC12E2420803 and it works/fits just like the original. Mouser 688-EC12E2420803 for $3.00
                  09-09-2022, 08:59 PM
                • DCJack
                  B&K 707 tube tester. I need help.
                  by DCJack
                  Hi everyone!

                  I managed to get my hands on a rough condition B&K 707 for "the best price" because it was not working. It's my first tube tester and I'm really wanting to get it up and running. I downloaded that manual that has the schematics and tested every resistor and capacitor and replaced the ones that failed. I replaced the missing 83 rectifier tube with a used but tested-good one. I also have a number 80 rectifier tube that I have used in tests before I found the 83 tube.

                  Initially I noticed that I was not getting the red on-light to turn on, but it...
                  03-05-2024, 05:05 PM
                • the_rem
                  Unknown transformer : how to find a good replacement part ?
                  by the_rem
                  Hello guys,

                  I would like a quite old but still good 800 W ATX PSU to be repaired. The problem was an extremely heavy coil whine coming from the small secondary transfomer on the PCB.

                  I desoldered it hoping the references on the upper side would allow me to find a adequate replacement part. Sadly the written references drove me nowhere but to the manufacturer (I-MAG). I sent them a message like a bottle in the see asking them to send me a datasheet of the transformer. And... They responded ! I received a kind of datasheet (see attachment) but my competencies do not allow...
                  VEF20FB07BW(2025001A)20110927.pdf
                  https://drive.google.com
                  04-23-2025, 01:48 AM
                • ezenia
                  PS4 controller left stick potentiometer replacement issue
                  by ezenia
                  Hello,

                  Not sure if this is the correct section, but I have a PS4 controller that I am trying to fix. It developed stick drift on the left stick and the usual simpler methods did not fix the problem.

                  So I went on eBay and ordered some replacement potentiometers. https://www.ebay.co.uk/itm/174967976757 is where I got them from.

                  I took the green potentiometers off the replacement sticks and soldered them onto the PCB. Assembled the controller and ran some tests. The drifting was somewhat fixed (not fully in center, but way better than before). However,...
                  09-30-2023, 02:19 PM
                • Schoenradt
                  ECH81/6AJ8 Vacuum Tube Question
                  by Schoenradt
                  Recently I acquired an Eico HFT 92 AM/FM radio made back in 1958. The unit has had some decent modifications done such as replacing the rectifier tube with silicon diodes and replacing the main filter capacitor with electrolytic capacitors. When I powered it up FM wouldn't tune past 105Mhz. I checked the FM tuner front end assembly and found a capacitor not soldered to the coil from the Plate B+ to and ground on the other side of the coil. Some calibration was needed on the trimmer capacitor on the tuner. My question is AM is extremely weak. When I tap on the tube I get all kinds of snapping and...
                  06-10-2021, 05:49 PM
                • Loading...
                • No more items.
                Working...