yamaha

My P200 has started crackling when I first turn it on. After a while it stops making noise and sounds clean for hours. I think this must be a capacitor, possibly in the signal path. Has anyone seen this symptom before? Any ideas that can point me in the right direction to repair it? I'm not...

Hi there, long story short, I’ve got a Yamaha RS 202 and I’m using it with 70s midfi speakers (RTR EXP-12 8 ohm and an advent prodigy I 6 ohm, 4 ohm minimum). the other day, I hooked up both. I played them a little loud, not pushing it too hard, about 80 on the amp volume. The amps apparently...

I just acquired this Yamaha K-320 from Goodwill for $10. It seems to be in good condition, and includes level meters. I mostly just listen to vinyl, so I was wondering if it’s possible to have the level meters on the cassette deck work while I listen to records? Sorry to ask, but I wasn’t able...

Anyone know where these can be purchased? Needing, all are 1/2w 3.9 Ohm 47 Ohm 68 Ohm 680 Ohm 220 Ohm

I tested main amp with dummy 4.4ohm load with 1kHz signal and after positive signal clipping few seconds then fuses (F801-804) burned. Then I removed all main amp transistors TR717-720 (4pcs) and measured them, all was ok. Then I tested main amp board without main transistors and output voltages...

My P2200 was recapped by me and has been performing beautifully but has just developed a hum. Diagnostics listed below. Please can anyone suggest the most likely cause and likely location? All input sources disconnected, the hum is present. Hum can be made louder or even disappear, by rotating...

Seeking input to review this list to insure I have placed the correct substitute. Also needing other options that are not available

Greetings, I am 100% new to the TT world. I currently have a AT-LP60 that is about as basic as it gets. Well recently I found a used Yamaha YP-B4 for 25$ that was advertised as not working, but had power. So I thought, what the hell, what better way to get into it than fixing one. Anyway enough...

Question for Yamaha A-1020 owners: if the accessory jack jumpers on the back are removed, and those inputs are not plugged into an equalizer or anything else, will the amp still produce sound? Attached is a pic with the accessory jack jumpers in (lower left, below the phono inputs).

Hi, Long story short I got scamed by seller. And now he won't admit that he has hidden this issue. He says that I have damaged the woofer. I was doing 10wpc tops and it's first time I've heard that you can damage woofer by decentralising it with proper usage. Everything looks fine with this...

Hi There, I have got on of these on the bench and my knowledge is not advanced enough to handle the behaviour of the amp. When I first tested the amp with dummy-loads and signal generator en scoop. I just saw noise the pots and switches. After cleaning the pot and switches I tested it again and...

Electrolytic caps in the power supply and function board all measure greater than 20% over or under value. The exception is the 3.3uF caps, they measure per spec. These are all easy enough to replace, but my concern is the Tuner Board is also loaded with electrolytic caps, if I start pulling...

Methods/procedures step by step? Required test equipment to perform these test?

Hi! Hoping you all can help me with an AVR issue. Yamaha A-800 for reference. When powering the unit on, I get either one channel or no channels producing sound until I raise the volume sharply and to a high level. Then both channels will act normally and adjust with the volume normally. It...

Hello, Trying to hook-up sub-woofer to system but based upon directions I do not understand the hook-up between Pre-Amp/Receiver/Sub? Help needed... Directions tell me to use 2 sets of RCA cables, going from pre-amp to Sub & receiver to Sub but I do not have any additional RCA slots left on...

Was wondering why my bottom-end had gone away, my Yamaha NS-W1 from early 80's died. No light and no power. Took it to the bench, removed the bottom and side grills. I'm not electrically inclined at all. I have a multimeter and the service manual for it. Where do i start? No loose wires or...

Hi all, I've really enjoyed looking at this forum in recent months while shopping around for a 70s stereo receiver as an upgrade from the 90s Kenwood I've been using for years. For background, I am totally inexperienced with electrical repair. Last week I bought a Yamaha CR-450 for 70$ from...

What are the matching pairs that need to be changed out on the A and B boards if one (or more) transistor fails? I found a bad TR502 (2sc1213a - NPN) on board A and a bad TR504 (2sc1213a - NPN) on board B. I understand the transistors need to be replaced in PNP/NPN pairs. With that being...

Can a reed relay be tested in situ? If so, how does one do this? The reed relay in question is a RL6442 - H132 (location RY301) in a Yamaha C4 preamp.

There was a thread a few years ago covering this, but it didn't have any resolution. I used to have a first generation Apple TV - which had a built in optical out for audio. I would run this output into my two channel Yamaha and use my stereo for movies/music (turning down the TV speakers...

Have done a lot of work on this preamp and am starting a fresh thread because several faulty components have already been replaced or repaired and am hoping it may now be much easier to isolate and identify the problem. The issue: Hum is present on all inputs. -Playing vinyl on Phono 1 and 2...

Is the correct replacement for a WZ130 located at D503 and D504 on the Power C Board this? ONSEMI 1N4148TA Small Signal Diode, Single, 100 V, 200 mA, 1 V, 4 ns, 4 A https://uk.farnell.com/on-semiconductor/1n4148ta/diode-ultrafast-300ma-100v-do/dp/2322485?CMP=i-bf9f-00001000

Hi all, I have an old Yamaha CR-400 tuner that I picked up in university almost ten years ago at a Salvation Army, it served me well for many years, and I had it serviced once about 3-4 years ago. Last time I hooked it up, a bunch of the bulbs had burnt out, tuning wheel was giving a weird...

Can anyone tell me how, or direct me to a page, that explains how to test a dual jfet? I want to test the 2SK100’s I have in my Yamaha C4 and A1 with a DMM. Apparently, if they’re working well, they’re interchangeable. However, I have issues in one channel in each amp and confirming their...

Is there an available replacement for the 2sk100 double jfet? Have read that a pair of matched 2sk170-V will work. Can anyone confirm this or suggest a better or alternative solution? One of the 2SK100’s in my Yamaha C4 preamp may be faulty..