Sacon FZ revival experiment

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • stj
    Great Sage 齊天大聖
    • Dec 2009
    • 30972
    • Albion

    #21
    Re: Sacon FZ revival experiment

    you take the readings as a whole.
    if capacitance and esr look o.k. then v-los you think about,
    but it's more common with high v-loss to also have high capacitance - then you know the cap is fucked.
    best i'v seen was 3300uf caps reading over 9000

    Comment

    • momaka
      master hoarder
      • May 2008
      • 12170
      • Bulgaria

      #22
      Re: Sacon FZ revival experiment

      Originally posted by stj
      you take the readings as a whole.
      if capacitance and esr look o.k. then v-los you think about,


      Originally posted by stj
      best i'v seen was 3300uf caps reading over 9000
      Well, these are probably good contenders:

      Rubycon MFZ 6.3V 2700 uF reading ~6300 uF


      And Sanyo WF 6.3V 1500 uF reading over 4000 uF

      Comment

      • stj
        Great Sage 齊天大聖
        • Dec 2009
        • 30972
        • Albion

        #23
        Re: Sacon FZ revival experiment

        an un-molested GM328A!!!
        you need a rotary encoder and a faster crystal and a better regulator

        Comment

        • AleXis6
          Senior Member
          • Feb 2021
          • 69
          • Belarus

          #24
          Re: Sacon FZ revival experiment

          Originally posted by eccerr0r
          The v_loss
          video about vloss - it is very inaccurate

          Comment

          • momaka
            master hoarder
            • May 2008
            • 12170
            • Bulgaria

            #25
            Re: Sacon FZ revival experiment

            Originally posted by AleXis6
            Nice video!
            I like that they guy is showing actual V_loss with higher voltages (26V in his video, if I understood correctly) and over a long period of time, therefore being able to get a more accurate estimate. And also the theory of how he is calculating it! Very good and informative.

            However, in the case of electrolytic capacitors, I think we also have to remember that -used- capacitors will become pre-formed to a certain voltage after being used in a circuit for a very long time - e.g. 6.3V cap used on a circuit that handles only 2.5V will make the cap "accept" up to 2.5V easily, but any higher voltage will experience a much greater V_loss. Thus, for electrolytic capacitors at least, V_loss can be very non-linear depending on the test voltage used. On that note, if these cheap testers show high V_loss on a cap, chances are that it's in pretty bad condition already. I say "chances", because sometime I have seen caps fool the meter to display high V_loss (or a few polymer caps, in particular) without there being anything wrong with these caps. Perhaps someone should make V_loss a separate function on these cheap testers that measure it over a longer period of time and with a higher voltage applied onto the cap, just like in the video - then V_loss could become quite accurate, possibly.

            Originally posted by stj
            an un-molested GM328A!!!
            you need a rotary encoder and a faster crystal and a better regulator
            Eh, maybe another day. Too many projects to thinker with and I use this tester a lot... plus, it still works. So it always goes to the back of the queue. Perhaps if I get a 2nd one of these, I'll try it (and I think I might try to get one... eventually.)
            Last edited by momaka; 03-13-2022, 07:24 PM.

            Comment

            • eccerr0r
              Solder Sloth
              • Nov 2012
              • 8694
              • USA

              #26
              Re: Sacon FZ revival experiment

              It's over 9000!

              Ugh want something to read not watch...

              Comment

              • momaka
                master hoarder
                • May 2008
                • 12170
                • Bulgaria

                #27
                Re: Sacon FZ revival experiment

                Originally posted by eccerr0r
                It's over 9000!

                Ugh want something to read not watch...
                So put on subtitles for the video?

                Comment

                • eccerr0r
                  Solder Sloth
                  • Nov 2012
                  • 8694
                  • USA

                  #28
                  Re: Sacon FZ revival experiment

                  Transcript with finger pointing? Or do I still have to wait for the whole thing to be played?

                  Comment

                  Related Topics

                  Collapse

                  • sam_sam_sam
                    20 year old Kenmore refrigerator ice maker bad water valve coil took a crap
                    by sam_sam_sam
                    I got lucky that when I got home and was about to get some ice out of the ice dispenser I hear and see water running down the outside of the ice dispenser what the heck is going on here

                    At first I thought that the ice dispenser mold was cracked so I brought a new ice maker because this one has been in there for about 10 years now

                    Well I put the new one in and wait and I wait for the water valve to open and let water in no such luck well there is a way to check the function of the motor and the water valve on this ice maker just need a jumper wire “L” to...
                    04-09-2023, 08:04 PM
                  • edugimeno
                    Stagg sms12p audio amp has water damage
                    by edugimeno
                    Hi! My friend just brought this audio amplifier/speaker fro his music band saying they realized its got no sound. Led powers up but there no sound at all
                    I opened it and found 3 board. 2 of them are for input plugs and potentiometers, and the other larger board has the amplifiers for 2 large speakers that it drives
                    There's also a large toroid transformer that feeds a lower voltage to the first 2 boards and a larger voltaje (36x2 rectified close to 100v) to the power board. The power board has the plugs for both speakers
                    There is only one signal wire connecting the first boards...
                    05-24-2025, 06:00 AM
                  • RetroComputingGrotto
                    Water Damaged Toshiba 48L1435DB
                    by RetroComputingGrotto
                    I have a water damaged Toshiba TV that was hanging nicely on the wall then over the summer we had a new multi-million pound boiler system put in and right where this TV was hanging is a nice new pair of water pipes for the radiators...

                    The TV hasnt been used for a fair few months but it was needed again the other day and needless to say, it didn't power on or show any signs of life (no standby LED etc). After checking the fuse in the plug (and that the socket it was plugged in to worked) I decided to get up some step ladders to take a closer look and low and behold! It looks like...
                    10-07-2024, 08:23 AM
                  • rzsn
                    water damaged G513I
                    by rzsn
                    Hello friends, so I have got a "water damaged" (or cola/beer/coffe .. something dark and sticky) G513I system - which has the board and schematics from this thread. After cleaning up all the visible sticky residue with water and detergent (thankfully mostly on the top/keyboard side), I have a partial success. IPA was of no use for cleaning this.

                    Using a bench power supply on the DCIN jack (as it seems that the PSU keying pin is not wired at all - series resistor R6003 is not populated), and using a shoring wire for the power button (either pin 5 on CN251 keyboard, or one...
                    12-22-2024, 09:02 PM
                  • abajor
                    A2141 820-01700 Water Damage L8504 Damaged, U3100/U3200 power cycles UB300/UB400 5V .25A
                    by abajor
                    Like title says A2141 came in with Water Damage, customer desperately wants the data.

                    The actual water ingress doesn't appear too bad it sat for a day but was very dusty internally. I have no idea why L8504 was arced there is no apparent moisture there or around the LVDS cable; however, the LVDS to screen screw studs had popped off at some point and somebody tried securing it with kapton tape.

                    I had to create a micron wire pad jumper to reconnect the south side of the L8504 since the primary pad was blasted down to the vias.

                    That said after cleaning up the...
                    12-21-2024, 07:16 PM
                  • Loading...
                  • No more items.
                  Working...