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oscilloscope

  1. P

    MPI-4 High Voltage Power Supply

    I'm looking to change the high voltage power supply of my mpi-4 as the scope is no longer outputting a display and believe the C301 capacitor has gone faulty which is a .1uf 1000v Sprague black beauty cap it makes a noticable buzzing sound when the unit is turned on. My question is which...
    • PLUTD
    • Thread
    • capacitor high voltage power supply mcintosh mpi-4 oscilloscope power supply
    • Replies: 1
    • Forum: McIntosh Audio
  2. darklife

    Kenwood oscilloscopes?

    DSCN1488s by darklife posted Jun 27, 2022 at 11:41 AM I just got a pair of Kenwood CS-5375 from 1997 scopes for free that originally came from a tech university and it seems information on these is quite rare and even stranger they have three input channels instead of dual or quad. What's up...
    • darklife
    • Thread
    • 5375 kenwood oscilloscope
    • Replies: 10
    • Forum: DIY
  3. KNielsen

    Safty capacitor??

    Maby a noob question, but still learning... How do I measure with my oscilloskop if a safty capacitor is needed or a good choice at this location when a PSU is build from scratch? Or needed at all?? I know it's frequency related regarding the safty cap value, but how do I measure this? I have a...
    • KNielsen
    • Thread
    • capacitor oscilloscope powersupply psu
    • Replies: 9
    • Forum: DIY
  4. Juan-Jose

    Foolin' around with my Marantz 2110's oscilloscope

    Foolin' around with my Marantz 2110's oscilloscope :rflmao:
    • Juan-Jose
    • Thread
    • fun marantz marantz 2110 music oscilloscope scope
    • Replies: 2
    • Forum: Marantz Audio
  5. Johnny_Law

    Help Diagnose Marantz / Philips CD60: Decipher Service Manual, Use O-Scope?

    I am working my way through diagnosing a Marantz / Philips CD60 that will not read discs. The service manual is pretty good but I am having some trouble using my oscilloscope - which I've never used before. It's a Tektronix 2236 from an EE friend that he hadn't used since college. He says it...
  6. VintageDutch

    Been a while but now working on.....

    Hi all, Sorry to tell that it has been a while that i have been posting and reading here.. Been buzy... Took the time to repair my good old Trio cs-1560A oscilloscope... It now is as flawless as I could make it... Also worked on my SONY SQR 6650 receiver... Did a full recap with regular spec...
    • VintageDutch
    • Thread
    • oscilloscope recap repairs sony sqr 6650 trio ka 250-u
    • Replies: 1
    • Forum: Solid State
  7. D

    Sansui au777 oscilloscope settings

    Hello everyone. After a lot of patience I was able to score an au777 with wood case. When it arrived I was surprised to see that no metal cover was under the woodcase...was the woodcase an option? No idea... inside was super dirty and a blown fuse. Checked the outputs... 1 of the d143 was blown...
  8. merlynski

    Anybody use a Siglent Technologies SDS1202X-E 200 mhz

    Does anybody here have one of these (or used one): Siglent Technologies SDS1202X-E 200 mhz How happy are you with it? Any major problems? I am looking at acquiring a 200MHz scope and I am torn between a new one with modern bells and whistles, and an old Tek 475 analog I would be completely...
  9. JMiP

    MINI DS212 Oscilloscope

    Would the MINI DS212 oscilloscope (Youtube video review) work well with amplifier/receiver repair applications? I think the most attractive part of it is that it is very small and would hopefully work well for people who don't have a lot of space to work in. It also has a built-in signal...
    • JMiP
    • Thread
    • oscilloscope
    • Replies: 11
    • Forum: DIY
  10. MAV

    Pioneer SX-939 protect relay shuts off with volume increase (pict)

    Hi all, I have a SX-939 that turns on plays normally until i turn the volume up and then protection relay clip. I have set Bias 25mV and check speaker output 0V. The output signals look good (1khz, 8ohm) in the oscilloscope but when the signal starts to approach about 18V (40W) the protection...
    • MAV
    • Thread
    • oscilloscope pioneer sx-939 protection relay
    • Replies: 23
    • Forum: Pioneer Audio
  11. David_NC

    'New' Scope

    I've been working on the dbx board in my Team C-3RX cassette deck. The decoder has horribly distorted output when dbx is switched on. For the past few weeks, I've been using a borrowed oscilloscope to help determine the bad component(s). After being shown how to use it and how useful it can...
  12. MKG

    Finally bought my first oscilloscope!

    Okay, actually it’s my second- but my first I had two decades ago and never got working because it needed a tube and I didn’t know wtf I was doing. I’ve been looking for one for a while, but shipping on eBay just kills any deals out there. So, I’ve been patiently waiting for this year’s ham...
    • MKG
    • Thread
    • 7704a oscilloscope tektronix
    • Replies: 20
    • Forum: DIY
  13. SamuelArthur

    Technics SH 3433 Hookup

    New to posting here, so apologies if this thread started in the wrong place. I've just come into a Technics SH 3433, which appears to be in working condition when powered on. Unfortunately, since I don't have a quad receiver, I'm not entirely sure how to hook it up to a two-channel system. It...
  14. audiodactic

    Pioneer SA-7500ii left chan distortion

    Hi, everyone. I decided to start an account here because I'd find myself here anyway when I would search for audio advice online. But see here's the thing guys/gals... I work at a record store and repair shop. The owner is a cool guy but the tech is reluctant... excuse me, refusing to teach me...
    • audiodactic
    • Thread
    • distortion diy integrated amp integrated amplifier oscilliscope oscilloscope pioneer sa-7500 pioneer sa-7500ii receiever troubleshoot
    • Replies: 9
    • Forum: Solid State
  15. blfttieq

    RCA WO-535A Help!

    I'm trying to get to the next level on a budget. I was gifted this scope. The scope is super clean inside and out. There are 2 variable inductors or chokes on the vertical board. One was broken in half, the other had a leg not soldered in and partly hanging loose. The devices look identical in...
    • blfttieq
    • Thread
    • choke inductor oscilloscope rca
    • Replies: 7
    • Forum: DIY
  16. c.coyle

    Hantek DSO5102P digital oscilloscope

    Anybody using this scope, or other Hantek models? I'm looking to create some bench space, so I'm thinking of replacing my ancient boat anchor Hitachi V-212 (which has served me well) with a Hantek DSO5102P. $273 from Amazon, including shipping. I like it mostly for the price. Less than Rigol...
    • c.coyle
    • Thread
    • digital oscilloscope hantek oscilloscope
    • Replies: 14
    • Forum: DIY
  17. Homer4beer

    Tektronix Oscilloscope score - Model: TDS3054

    Hi guys, I picked this up from a local auction site for $1500 Aus ($1130 US), Ex Australian Defense Force Equipment. I did take a big risk as I bought it site unseen. To be honest, I was fairly crapping myself and suffering buyers remorse when I stumbled across some web posts commenting on how...
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