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capacitors

  1. A

    Another thread about Realistic Nova 7B

    Hi, long time viewer, first time member. Ive seen a lot of threads on the Realistic 7B but still left with questions. I scored a Nova 7B from a guy who bought them, according to him, in 78' when he worked at RadioShack. He claimed to have used them very few times and then retired them somewhere...
    • Arekusu881
    • Thread
    • capacitors nova 7b radioshack realistic
    • Replies: 16
    • Forum: Speakers
  2. Bogdan Baba

    Capacitor matching in a Power AMP

    I have a Mitsubishi M-A01 that I'm recapping. I am in no way an expert at this but so far I recapped about 20 devices so I do know a little bit. This particular AMP has one requirement the space is super tight I have no clearance what so ever. I need to replace 2x 20.000 UF at 55v with...
  3. PaleAleKing

    Technics SA-5760 recap

    Good morning, After searching the forums, I did not see a recap / upgrade BOM or other list posted. Yes, I can refer to the SM and get out the calipers and spec them myself, but my problem is time. There are the kits on that auction place, but goodness, they are seriously marked up! If a...
  4. Z

    Crossover caps, why use in parallel?

    Hi, a quick one for the techies amongst you. Checking over the crossovers in my Ditton 44's there are two instances where the manufacturers have used 2uF caps doubled and even tripled in parallel, to give 4 and 6uF respectively. These actually meter out at 6.9uF and 8.5uF so I think I should...
    • ziggydave
    • Thread
    • capacitors crossover doubled film capacitor
    • Replies: 9
    • Forum: Speakers
  5. J

    Resistor Fail Modes in Vintage Receiver (Marantz)

    Hi All, Do you know what might be the most probable failure mode for a resistor within a vintage receiver? The context: I recently opened up my Marantz 2220B for a cleaning and I realized a resistor within the power supply assembly board (R805; 330 ohms, 2W, 5%) looked very discolored with dark...
    • jorgealk
    • Thread
    • capacitors marantz recap and restoration resistor burned resistors restoration help
    • Replies: 19
    • Forum: DIY
  6. S

    Sansui AU-919 Black Flag Capacitors, Some help please

    Hey everyone, i just bought a Sansui AU-919 on craigslist and in need of some help. The guy said it was fully serviced, but I'm not sure if he is telling the truth. Can someone here spot if the Black Flags exist in this unit (see attached photos)? Any help would be appreciated
    • sjackh
    • Thread
    • au 919 au-919 black flag capacitors sansui sansui au-919
    • Replies: 132
    • Forum: Exclusively Sansui
  7. A

    Infinity WTLC Repair

    I recently purchased a vintage pair of Infinity WTLC speakers in decent shape. They sound really incredible, but I noticed that one of the speakers is playing at a lower volume than the other. After switching the wires, outputs, and even repositioning the speakers, I'm confident that there's a...
    • AnimaMvndi
    • Thread
    • capacitors infinity wtlc repair
    • Replies: 6
    • Forum: Speakers
  8. Sam08861

    Wharfedale W70E resto- Anyone have crossover wiring info for 4uf, 6uf, 8uf version?

    Hello All, Acquired a pair or W70Es and in the process of rehabbing them. All drivers working and the purple dome tweeters (square backs, plactic covers on front) have been replaced with dayton 1" silk dome shielded tweeters. The original tweeters were provided, but one has dome that needs to...
    • Sam08861
    • Thread
    • capacitors crossover rosedale w70e wharfedale
    • Replies: 5
    • Forum: British Audio
  9. L

    Marantz MA-700 Monoblock Repair Help

    Hi, I've had a lot of MA-700 monoblocks over the years and they always eventually succumb to intermittent popping. This seems to be a common issue. This area of the P701 circuit board tends to get a charred look: Here is the whole board layout: Here is a schematic of the whole circuit...
    • Lee Hester
    • Thread
    • capacitors marantz repair transistors
    • Replies: 3
    • Forum: DIY
  10. A

    Sansui ZR-1000 --> Cap Replacement?

    So I just cleaned and lubed my new very good condition Sansui RZ-1000 yesterday and WOW! My mid-grade Polks and Circa 1980 pristine 3-way 12" Technics were pumpin! Of course the bass was waay high but the amp put out more power than both my ailing Denons 1909 and 4800. It wasnt really on my...
    • audiophilico
    • Thread
    • capacitors improvement newbie performance sansui z series value
    • Replies: 1
    • Forum: AK Polls
  11. Mat86

    Best caps to replace with?

    So I have a headphone tube amp I've been tweaking and noticed 4 of the 6 larger electrolytic caps were bloating. It's about 12 years old now and comes stock with Rubycon 470uF 250Vs. While I'm sure I can get away with just leaving it a few more years, many recommend recapping after 10 years or...
    • Mat86
    • Thread
    • capacitors recapping
    • Replies: 14
    • Forum: DIY
  12. Reliving.

    Best replacements for these capacitor colors? Blue, Orange, Yellow

    • Reliving.
    • Thread
    • akai cap change capacitors cassettedeck sanyo
    • Replies: 9
    • Forum: Tape
  13. F

    What are these?

    What brand of capacitors are these? I think these are the same capacitors I have seen in NAD gear. These particular ones are from a Lafayette LR-1100. The smaller caps are closer to +/-20% tolerance but not quite there. The two 100uf from the phono preamp board measured 196.4uf and 197.5uf...
  14. ocdecio

    1060 - Capacitor installation

    I got this rusty but otherwise pristine 1060 to work on. It looks very original and I am curious as why these capacitors are installed high up with sleeving. Should the new ones be installed the same way?
  15. Fred DuBuron

    Do different vendor crossover caps really sound all that different?

    This weekend I found a single orphaned AR-28S for an astoundingly low price of $8.99 at a local Thrift Store. I almost cried... so I am eager to hear this critter sing... and hopefully, find it a twin sibling at some point New surrounds are on order... As far as the cross-over is concerned...
    • Fred DuBuron
    • Thread
    • audyn capacitors crossover dayton jantzen solen
    • Replies: 229
    • Forum: Speakers
  16. jpatti75

    Tube Amp - Capacitor Cross Reference?

    Doubtful this fits the category of "best of old tube technology", but I recently picked up a 1960 SK70 3-channel Motorola Tube Console Stereo. :) While it powers and the tubes at least fire, it needs a thorough going through and I imagine at least some of the caps need replacing. Finding...
    • jpatti75
    • Thread
    • capacitors electrolytic motorola sk70
    • Replies: 66
    • Forum: Tube Audio
  17. jefferylhenr

    Luxman R-3055 Receiver Before first turn-on?

    I just picked up a mint Luxman R-3055 receiver. Bought originally by an older gentleman and gifted to his son who never used it or even turned it on; in original plastic, foam and box. It hasn't been turned on for at least 5 years. It looks like its brand new... Question is, should I replace...
  18. B

    JBL L5 Xover rebuild/cap

    Hello All: Longtime lurker first post: Picked up a pair of JBL L5's for next to nothing -- they need some cosmetic work but with some grill repair and enclosure refinishing they will "look" great. Having a hard time finding any information on the xover rebuild/re-cap. I will confess, just...
    • BernieH
    • Thread
    • capacitors crossover jbl re-cap
    • Replies: 6
    • Forum: Speakers
  19. H

    NAD 3020A capacitors list for recapping.

    Hi, Might anyone have a parts list, especially capacitors, for a NAD 3020A? Many thanks!
    • Hifibythekg
    • Thread
    • capacitors nad 3020a
    • Replies: 5
    • Forum: DIY
  20. PghAudioGuy

    Looking For Info, Sansui G-5700 Volume Variation, Capacitors?

    My 1980 Sansui G-5700 has only one issue - the volume (both L&R speaker channels) fluctuates intermittently from two of 3 sources: FM Radio, Aux/CD Player, but not Phono (as far as I can tell). The volume occasionally rises a few decibels, then after staying at the higher level for a minute or...
  21. xxbackslash

    need help with old rca console

    i have this late 60s rca victor(vjt34L) console that hums when i turn it on. the hum goes away immediately after i turn it off. im pretty sure its the capacitors. when looking through the back of the cabinet i see one on each large speaker and one big one on the main control area. i plan to...
    • xxbackslash
    • Thread
    • 1960's advice buzz capacitors help hum rca victor solid state vinyl vjt34l
    • Replies: 2
    • Forum: Solid State
  22. Derrick111

    Pilot 240 Restoration & Caps

    Hello everyone. I am restoring a Pilot 240 I acquired, and need some advice on both filter and signal caps. First, I was thinking of replacing the two cans (80uf / 40uf 400v and 20uf / 40uf / 40uf 350v) with two 50 / 50uf 500V cans and one single 80uf mounted underneath. The idea being that...
    • Derrick111
    • Thread
    • capacitors filter capacitors pilot 240 signal capacitors
    • Replies: 2
    • Forum: Tube Audio
  23. S

    Failure-Recapping a MCS 3223

    Short story: I tried recapping my receiver's power supply, it worked at first but the left channel died after I moved it a little, i opened it and noticed that one of the capacitors had gotten loose, I tried to reconnect it and now it won't power on. Question: What could've caused this? Is...
  24. Homebrook

    Kenwood KX-1030 Worth Keeping?

    I recently purchased a Kenwood KX-1030 on Ebay. It didn't work, but externally it was in excellent condition, so I went for it at the reasonable price being asked. I thought it might just need belts and that perhaps I could get it working. After getting it I was initially pleased, because it...
    • Homebrook
    • Thread
    • capacitors capstan motor kenwood kx-1030 pinch roller restoration tape head
    • Replies: 105
    • Forum: Tape
  25. S

    Ordered 4 caps from DigiKey, and they only sent me two.

    And looking back at the order history, it appears that I've only been charged for two caps, even though I had 4 in my cart during checkout... These caps were supposed to be for a crossover rebuild, two 4.7uf 50v's and two 2.2uf 50v's, both Nichicon Muse's. But since I only received the 2.2uf's...
    • Saffire
    • Thread
    • capacitors digikey order
    • Replies: 37
    • Forum: DIY
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