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solid state

  1. T

    Onkyo TX-4500 MKII Output Level Issue

    My cousin bought an Onkyo TX-4500 MKII and I restored it for him. I replaced all the electrolytics, filter capacitors, relay, cleaned all the controls and remounted outputs. I was really impressed with the sound of this unit so I decided to pick one up and do the same work for my unit. The unit...
  2. C

    Sansui Solid State Amplifiers and Low Freq. Oscillation

    Hey all, I have a weird issue that's come up twice now, both Sansui solid state receivers, both the same kind of issue, low frequency oscillation. First - I have a Solid State 3500. The outputs are original - as are all pre-drivers/tx on both amp boards. Bias adjusts fine on both channels...
    • CaseyWKC
    • Thread
    • bias low frequency oscillation power supply sansui solid state stability stv swing voltage
    • Replies: 7
    • Forum: Exclusively Sansui
  3. C

    MC250 3v Voltage Spikes One Channel

    Hey all, I had an MC250 brought to me with transformer buzz and severe hum in both channels. I found the 500/200uf multi section filter leaking and after replacing that both buzz and hum are gone. However; I am still getting a nasty voltage spike of 3v dc in the left channel on power on and...
    • CaseyWKC
    • Thread
    • amplifier filter caps mc250 mcintosh mcintosh 250 mcintosh 2500 multi film section caps solid state
    • Replies: 18
    • Forum: McIntosh Audio
  4. D

    Accuphase P-300/X/L/V

    Are there any Accuphase owners who can share (if applicable) their experience with the P-300 line of power amps? Any big sonic differences between the original P-300, the P-300V and the ones in between?
    • dnova93
    • Thread
    • accuphase accuphase p-300 audiophile hifi power amp solid state
    • Replies: 4
    • Forum: Solid State
  5. D

    Amp to pair with lintons?

    Looking into purchasing some Wharfedale Lintons as part of my hifi setup, though I’m a bit torn with what integrated amplifier to use with them. I prefer something that has detail with punch and warmth. I’ve been considering a Yamaha A-S801 (which seems to be a perfect combo for many folks) but...
    • dnova93
    • Thread
    • integrated amp solid state speakers speakers & amps sv236 tube vincent audio wharfedale linton yamaha as801
    • Replies: 2
    • Forum: Solid State
  6. mcaddie7

    Nikko NR 1019 Channel Issues

    Howdy all, So I have a Nikko NR 1019 that has been giving my troubles. After some time, the right channel will drop out. Now I've troubleshot this to be up to the Amp board as the receiver has a Pre Out / Main In jumper on the back. Both L/R Pre Amp signals go through the Left Amp fine, but...
    • mcaddie7
    • Thread
    • channel cut out channel cutout channel failure channel issues nikko nikko 1019 nikko nr 1019 receiver solid state
    • Replies: 1
    • Forum: Solid State
  7. A

    Pioneer FX-330 volume/balance

    Hi! I found a Pioneer FX-330 (identical to SX-330? except radio bands?) in very good condition in a charity shop. It has a combined Volume / Balance knob, where it's "split" in two, and the inner part is balance while the outer part is volume. Problem with mine is they are completely stuck to...
    • asolako
    • Thread
    • 60s amplifer fx-330 pioneer solid state sx-330 vintage
    • Replies: 2
    • Forum: Solid State
  8. M

    How to prioritize recapping.

    I have been acquiring a few 1970s receivers and I want to recap where appropriate. What should I prioritize? My main concern is the challenge of getting into tight spaces to replace the smallest electrolytics. I’ve fried one unit and I don’t want to make the “perfect the enemy of the good” kind...
  9. K

    Marantz 2230 w/ External Power Amp - Switching speakers

    Good morning AK, I have a quick question... I have a Marantz 2230 that I use as a preamp connected to a Peachtree Audio Amp500 that powers my Infinity CS-3008 floor standers. A few months ago, I picked up a nice little pair of Kef Q150 bookshelf speakers on sale. I gotta say, I was VERY...
    • Kcusick81
    • Thread
    • infinity kef q150 marantz + 2230 peachtree audio power amp preamp solid state speaker selector speaker selector switch speakers
    • Replies: 3
    • Forum: Solid State
  10. JHint

    Need help - bias on vintage amplifier SAE Mark IV DM

    Hello amazing community, I’m posting today with a request for help with my SAE Mark IV DM Amplifier - Won at an auction with the matching pre-amp and a dead right channel. The dead channel was solved by identifying FIVE of the eight fuse connectors being loose or broken, and I replaced all the...
    • JHint
    • Thread
    • amplifier sae solid state
    • Replies: 7
    • Forum: Solid State
  11. Lamar

    Favorite era of pieces shown

    Given the pieces within the eras shown, which era would you say is your favorite? 60's Late Sansui 3000A '68 Sansui 3300 '69 McIntosh 1700 '68 70's Early Sansui AU 777A '70 Sansui 210 '72 Sansui Seven X 2 '74 Sansui Eight Deluxe '74 70's Mid Sansui AU-11000 '76 Sansui 881 '75 Harman Kardon...
    • Lamar
    • Thread
    • amplifier krell mcintosh: pioneer realistic receiver sansui solid state sony speakers
    • Replies: 22
    • Forum: General Audio Discussion
  12. L

    Marantz 2225 FM Issues

    Calling all Marantz and FM "lovers" to try to decipher a familiar scenario that I have already seen on model 2230. 1) FM Signal strength meter barely moving (not even one line). 2) Center tuning meter (discriminator) centered and when tuning from station to station moving slightly left & right...
    • lazio2000
    • Thread
    • fm. marantz receiver solid state
    • Replies: 2
    • Forum: Tuners
  13. mcaddie7

    Marantz 2230 Right Channel Crackling?

    So I followed some of the other threads and here is where I am at. - With Volume down or at any volume, there is a slightly crackling on the right channel, this is with heaphones or with a speaker hooked up. - If I remove the pre out, main in jumpers I still get the crackling. - If I use an...
    • mcaddie7
    • Thread
    • 2230 maranta 2230 receiver repair marantz solid state
    • Replies: 5
    • Forum: Marantz Audio
  14. H

    (RCA VPT70E) Radio and Amp not powering on - my first restoration of a solid state radio, looking for help.

    Hi! I recently picked up a RCA VPT70E (circa 1970) from FB marketplace and was looking for some guidance on where to start with restoring a solid state radio. From my understanding they didn't make many of them, so it's hard to find documentation for them. It's a stereo console with a turntable...
    • hennery
    • Thread
    • amplifier capacitors rca restoration help solid state
    • Replies: 2
    • Forum: Solid State
  15. Refugee

    Older McIntosh Equipment - Where does the higher THD rating come from?

    I was curious what y 'all's thoughts were as to which components contribute the most to higher THD ratings on older solid state 70's McIntosh equipment vs. modern. It could be capacitors, transistors, resistors, pots and switching, or board layouts. Caps need to be changed out anyway, but does...
    • Refugee
    • Thread
    • distortion recap and restoration refurbish solid state spechs thd vintage 70's
    • Replies: 15
    • Forum: McIntosh Audio
  16. K

    Pioneer SA-610 NOS... worth $40 and a short drive??

    Hello all, I've been looking for components to build a secondary system in either the bedroom, or perhaps the garage. I came across a new old stock Pioneer SA-610 about an hour ago. According to the seller, it was bought brand new by his father, but never put in to service. It's still in the...
    • Kcusick81
    • Thread
    • integrated nos opinions pioneer receiver solid state thoughts?
    • Replies: 4
    • Forum: Dollars and Sense
  17. D

    Kenwood KR-9600 - Preamp problems?

    I recently bought a KR-9600. When I bought it, I was having a problem with the pre-amp. It would only work partially when you move the selector switch from one input to another. It would then play for a second then stop. It was not just a dirty connector as it was very systematic meaning that it...
  18. C

    Technics SU-G75 tweeter audio comes in/out

    Technics SU-G75 receiver with Technics SB-A15 speakers. The copper cable runs from speaker to receiver are as short as possible. For some reason, audio seems to come in/out of the tweeters of the speakers every now and then... but it appears to be an issue with the receiver than the speakers in...
  19. A

    Nikko QSR-4040 Distortion Repair

    I'm starting a new thread since it's been quite a while and want to start from the top. In summary I received this receiver which has distortion on both front and rear left channels, coincidence?, I have since re-capped it in an attempt to resolve the issue as I have done in the past. this was...
  20. Bill Huffman

    Yamaha CR-1020 Receiver Restore and Facelift

    I've been a member for a few years now. I have read and learned a lot as a result. Now I want to share one of my projects. I bought this receiver from the Bay about three months ago and last week it stopped powering on. I diagnosed this as a switch fault but I had planned on doing a recap...
  21. artsybob

    Marantz 3200 Preamp and 140 Amp Score + Questions

    Hello all! Last summer a former work colleague of mine was relocating across country and decided to give me his old audio equipment for free- including a Marantz Model 140 power amp. After a little while I decided to locate a matching Model 3200 preamp to go with it and to assemble a nice solid...
    • artsybob
    • Thread
    • 1970s marantz marantz 140 marantz 3200 solid state
    • Replies: 1
    • Forum: Marantz Audio
  22. U

    Kenwood KA-4002a VS Pioneer Pioneer SA-1490 VS Realistic STA-85

    Hi everyone! I'm in the process of setting up my first audio system, and I'm currently on the lookout for a good amplifier. I've narrowed down my options to three choices available in the second-hand market. Through my research on this forum and other websites, the Kenwood KA 4002a stands out as...
    • Uricg12
    • Thread
    • kenwood pioneer realistic solid state
    • Replies: 3
    • Forum: Solid State
  23. K

    Pioneer parts cross reference

    I have a Pioneer VSX-3600 receiver that is in good working order, but I need to replace some caps that are slightly bulging. I have the service manual with the schematics and part number list. However, the parts list does not show part values. Some of the components are hard to see without...
    • krf
    • Thread
    • pioneer vsx-3600 solid state vintage audio
    • Replies: 3
    • Forum: Solid State
  24. Oscarshock

    Decision between CA azur 851w and Parasound A23+ for low volume

    I plan to replace my current amp (Denon pma 600ne) with one of the two amps in the title because I no longer need all the functions that the Denon provides, e.g. DAC, BT, preamp etc, and I am looking for a pure power amp. I only need the amp to drive a bookshelf speaker, namely, Elac dbr 62 and...
    • Oscarshock
    • Thread
    • amplifer cambridge audio parasound solid state solid state amplifier
    • Replies: 4
    • Forum: Solid State
  25. EvilHank94

    Pioneer SX-1500td Center Channel question

    Hello friends, first time posting here. Just getting into vintage audio within the last year or so and really enjoying it. I’ve got a Rega RP1(not vintage), a pioneer sx-1500td and a couple of Bose 301 Series II speakers. I’m supposed to be picking up a couple of late 70’s JBL L19’s this weekend...
    • EvilHank94
    • Thread
    • center channel pioneer pioneer sx 1500t receiever solid state vintage
    • Replies: 4
    • Forum: Solid State
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