capacitors
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Kenwood 700M - replace filter caps?
Hi, I recapped a 700M a few years ago. I left the original power supply filter caps in- the big ones. I've sometimes wondered if I should spend the money to replace them, and just to complete the job. Looking at $100 minimum, probably. If the current ones seem to work fine, though they're...- davstev
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- 700m capacitors filter caps kenwood power supply recap
- Replies: 31
- Forum: Solid State
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About those dried out capacitors...
So I have a pair of Polk Audio RTA 12 speakers which I purchased around 1981 or so. Since they are 37 years old I thought they would benefit from a crossover rebuild. I've never attempted a rebuild like that, but being handy with a soldering iron and having some understanding of electronics I...- beansprout
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- capacitors crossover rebuild polk audio
- Replies: 9
- Forum: Speakers
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Sa 5200 low power output
I have a couple sa 5200s, each with its own issues. The first one sounds good, audio is balanced, no crackle or hum, BUT audio output volume is about a third that of my other sa 5200. I thought amp circuit transistors, but both channels failing in exactly the same way?? How about power supply...- Mmj
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- capacitors low power low volume power supply sa5200 transistors
- Replies: 1
- Forum: Pioneer Audio
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Basic Recap Question
I was just wondering if you guys might have any tricks as to how you normally go about prying the board from the speaker. I'm having a particularly tough time getting the board out to start the soldering work. I thought about just trying to solder through the subwoofer hole but that seems... -
Capacitor replacement yamaha R-V905
Hello everyone. Forgone me add this is on my phone. Any who, I have a yamaha r-v905 receiver that i saved from a dump pile. She works fine but I have noticed that the left channel lags some treble. This is on all sources including optical and at all volumes "excluding being a goof and blasting...- Xeratais
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- capacitors r-v905 yamaha
- Replies: 4
- Forum: Solid State
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SU-8600 - To recap or not?
Oops- wrong subforum.- AcidRephlux
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- capacitors pioneer repair su8600 technics
- Replies: 0
- Forum: Pioneer Audio
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Marantz 1200 buzz noise left speaker only,.. coupling cap or something else?
Hi folks, the faithful 1200 has developed a hiccup lately. Seems after playing a while, especially very quietly, or when sitting idle in between titles, after about an hour of running, I hear quietly very quietly a buzz with some 60hz , going up and down. It comes and goes, for about a minute...- macman007
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- 60hz buzz capacitors coupling caps marantz noise
- Replies: 2
- Forum: Marantz Audio
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White Van Capacitors?
Came across this on reddit today. The author says they're not from any restoration project and are being sold as new. Wouldn't be surprised if the author is a member here. In any event, is this one more fake thing we need to worry about from the Far East?- HiFi in WYO
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- capacitors fake?
- Replies: 16
- Forum: General Audio Discussion
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Dry Capacitor
AK members often hear that old capacitors should be replaced as they tend to dry out after many years of use in older vintage amps and receivers. To put a picture to this here is a photo of a small cap I replaced as part of replacing all the caps on the power supply of a Pioneer SX-980. In this...- gregmcm
- Thread
- capacitors
- Replies: 36
- Forum: General Audio Discussion
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Marantz 33 - help sourcing components
Hi there I am from Denmark, and have recently bought a pair of Model 33 and Model 16 (80w) model. I am a collector, and i value the gear and cultural history very highly. Marantz Model 33 was never imported into denmark for sale, so this piece is 1 of the only 2 known to ever to be imported into...- santashooter
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- capacitors marantz model 33 mouser sourcing
- Replies: 0
- Forum: Marantz Audio
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Capacitors
Hello, I have a few questions about Capacitors and reading the schematic. I know this is probably on the forum, I've searched just didn't see it. I have a tube amp (GE 752), and want to replace the original capacitors. Attached is the schematic with parts list. 1. When I look at the parts list...- dlbraly
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- 752 amps capacitors ge ge-752
- Replies: 9
- Forum: Tube Audio
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Magnovox Console Capacitor list
Hello, First time forum joiner here. I need some help if possible. I have a neat Magnavox Astro-Sonic console (64?) I need to replace the capacitors on. There's a bunch and I was looking for a list. The model number is 2ST667A. I was hoping to order without taking out the chassis until they... -
Reservoir capacitor upgrade...
I'm going through an SX-838 I got recently in great condition. I've gone through it all and I'm planning on migrate some of the regulators to heatsinks as theres plenty of room in the case. I was wondering about changing the main filter capacitors for the power amp and I just so happen to have... -
Marantz 1030 Power caps question
Hello all I’m on the last leg of a 1030 refurb, my first ever. The problem on the P700 is repaired, the amp board P700 and pre amp P500 are recapped, and everything is working and sounds great. The only things left is the re-cap of the P800, P900, and the three output caps. Here lies my...- Keith Baran
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- 1030 capacitors marantz refurbish
- Replies: 19
- Forum: Marantz Audio
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Capacitor Questions
I am in the process of recapping my Realistic SAF-40D integrated amp. One of the filter capacitors I bought to replace an old one isn't exactly the same values. Would I be able to replace a 20uf 50V capacitor with a 25uf 50V? The amp also has two two-sectioned can caps that are each rated 40uf...- artsybob
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- capacitors tube amp tube amp help
- Replies: 4
- Forum: Tube Audio
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Original large Advent loudspeaker - high frequency switch not working
Hi, I recently bought a pair of Advent loudspeakers, circa 1975. They sound good, but the high frequency switch at the back of the speaker seems to make little or to my ears no difference when switched between its three settings. The caps (revision 2 crossover, 16uf and 8uf) seem to be the...- UtterAudio
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- advent capacitors caps crossover large advents
- Replies: 2
- Forum: Speakers
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What brand would you choose first: Rubycon, Nichicon, or Panasonic?
Which brand do you use the most often or rely on when doing repairs and replacements?- Radkat
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- capacitors semi-conductors
- Replies: 76
- Forum: Solid State
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Recapping Question (2225)
Starting the process of recapping my 2225 and was wondering if there was a suggested brand of cap to replace the existing ones with? Most caps I have looked at are Elna brand which are available but I also noticed the cheapest on the website I looked at. Fearing you get what you pay for I'm...- Joey Abs
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- 2225 capacitors caps
- Replies: 5
- Forum: Marantz Audio
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Infinity RS 325 install foam or rubber surrounds new caps or not.
I scored a mint pair of RS 325's today 60 bucks today. Of coarse the surrounds are toast. I knew that when I bought them. I intend on putting rubber surrounds in but my buddy who has and opinion on everything said they came with foam rubber may effect the compliance too much. He's right as often...- Ric Harris
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- capacitors infinity rs 325 surrounds
- Replies: 5
- Forum: Speakers
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OK to replace bipolar electrolytics with film caps in crossovers?
I have a couple of pairs of Sansui loudspeakers (SP-1700 and SP-X9) that I am considering recapping as a preventative maintenance measure. These days, of course, it's easy to find film caps in the larger capacities where bipolar electrolytics used to do the job. For example, the SP-X9... -
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Marantz 2330 B Filter Capacitor help please
I have 4 , 6800uf 100v Rubycon capacitors. They have 4 solder lugs, 1 neg and 3 pos. My 2330 B has red ,white and a ground plate. The red goes to pos, the white goes to neg as neutral but I don't know where to solder the ground plate . I need a common wire. Can someone please help me? Maybe a...- Sparkythtbad
- Thread
- 2330b capacitors marantz
- Replies: 6
- Forum: Marantz Audio
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Strange issues with NAD 7240
Well I enjoy my NAD 7240 so much (after diagnosing problems thanks to members here) that I got another one. Unfortunaely this one has much bigger issues. Symptoms Very low sound from any input - about 60 db at full volume. Did some tests. Used pre-amp on another amp and nothing changed...- Drum
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- 7240 capacitors low volume nad pre amp repair tone controls
- Replies: 12
- Forum: Solid State
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Sony STR-6060 preamp repair
This is my second Sony STR-6060, I liked so much the first one that I decided to buy another one in better cosmetic conditions... but not 100% working. It seemed to be an easy fix: the preamp drops one channel at the first stages so I thought it could be due to an open cap or transistor, but...- spaghetti
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- capacitors repair
- Replies: 3
- Forum: Solid State
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Acoustic Research AR-5 restore questions. Speaker padding/crossovers
Hello all! I got a sweet score on a pair of AR-5's and already go new grills (there were holes), have original badges, refoaming woofers as we speak, serial numbers within 8 and both speakers have both papers stapled to the back-all complete. I plan on going all out on these so price isn't that...- jellyfish182
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- acoustic research capacitors crossover insulation speaker cabinet
- Replies: 23
- Forum: Speakers
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Marantz 1200 (Not B) Freshening Up...Consensus..
Hello folks, getting ready to take my 1200 offline for some maintenance and tuning. Its been on the bench once for relay board caps and diodes back in '09, along with Deoxit and Faderlube, the normal stuff. Now on it's 46th birthday I'd like to do something special. Catrafter and I spoke and he...- macman007
- Thread
- 1200 capacitors diodes diy integrated amplifier marantz recap transistors upgrade
- Replies: 2
- Forum: Marantz Audio