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Vintage Audio Fan
United States
เข้าร่วมเมื่อ 14 ก.พ. 2015
I am a die-hard vintage audio fan. I am always looking for a sonic adventure by taking on various vintage audio repairing projects. In the past, I have been benefiting from other people's sharing on TH-cam. In this channel, I would like to build a platform sharing my experiences and techniques with other DIY fans for dealing with various audio issues. You will also find many tips to solve the common audio problems. I welcome you to leave comments and feedback on my videos. To receive my newest videos and updates, I encourage you to subscribe my channel. For inquiries and consultation, please send message to my email: audiophileedh@gmail.com. Thank you for watching.
Sansui AU-D907 (AU-919) Repair Part 2 - Preamplifier
This is a continuation from the last video. This video is to share how I use the oscilloscope to troubleshoot the problem of the preamplifier. In the end, It just needed to clean the potentiometer (volume control). Sometime the problem is easy to fix if using the right procedures.
มุมมอง: 695
วีดีโอ
Sansui AU-D907 (AU-919) Repair Part 1 - Power Amp
มุมมอง 1.9K6 หลายเดือนก่อน
This is a repair video for my new project - Sansui AU-D907 which is equal to AU-919 for USA model. I always want to collect all the famous Sansui AU series integrated amplifiers. I already owned AU-719 and AU-819, and now with this new project, I have completed the AU-X19 collection.
2023 Taipei International Audio Show
มุมมอง 8397 หลายเดือนก่อน
I took a trip to Taiwan in December to visit the 2023 Taipei Audio Show (at Taipei Grand Hotel). I was so excited to see the newest products which showcase the current trend of the audio world. This 11-minutes video clip has been edited (due to the copy right) and condensed from a 1 1/2 days of on-site recording. Please leave comments and thanks for watching.
Marantz 2230 (Unit #2) Repair Part 2 - Power Amplifier
มุมมอง 38210 หลายเดือนก่อน
This repair video was filmed in mid-April. Due to the situation, I finally have a free time to finish the editing today. The unusual high voltage measured at power amp output was caused by a defective transistor H752 (not the power transistors as I suspected at the beginning). So this repair video may help other DIY fans to deal with the same issue as I had.
Marantz 2230 (Unit #2) Repair Part 1 - Preamp One Channel Not Working
มุมมอง 583ปีที่แล้ว
In this video I am sharing how to troubleshoot and repair a non-working channel in a preamplifier. Although my tester can't identify the defective transistor, I was able to find the problem and got it fixed. This video may serve as an example to deal with this type of issue of a preamplifiers.
Teac 3440 Repair - Dead Capstan Motor and No Play Mode
มุมมอง 2.3Kปีที่แล้ว
This Is a repair video for a Teac 3440 R-T-R deck. I have to give the credit to the threads which were published on the website of "UK Vintage Radio". Without their tips, I may need more time to figure it out the no play mode issue. I hope this video can help other 3440's owner who has the same issue as this unit.
Marantz 2230 (Unit #1) Repair - Uneven Sound Outputs
มุมมอง 1.1Kปีที่แล้ว
This is the repair video for a Marantz 2230 with uneven sound outputs. There are many possibilities for this type of problem. I suggest to analyze the issue by testing preamp and power amp separately. From there, the issue can be located and then we can do the testing for the components. I hope this video can serve as an example for DIY fans dealing with this type of problems.
Accuphase C-240 Repair - One Channel No Sound Output
มุมมอง 917ปีที่แล้ว
This is an example showed a defective relay may cause malfunction for a vintage preamplifier. In this video, I am sharing how I troubleshoot and repair a no output problem. This Accuphase C-240 preamp also had a problem in the phono stage which is similar to my previous repair video (a defective capacitor C11 in the feedback circuit). I did not include the phono repair clip in this video. But i...
Sony TC 558 Demo with Sansui AU-7900 & KEF Reference Model 2
มุมมอง 338ปีที่แล้ว
This a sound recording demo clip for a Sony TC-558 reel-to-reel deck. The equipment I used in this listening test included a Sansui AU-7900 integrated amplifier and a pair of KEF Reference Model 2 loudspeakers. Please leave your feedback if you have any experiences with Sony TC-558.
Sony TC 558 Repair - One Channel Not Working on Reverse Play
มุมมอง 920ปีที่แล้ว
This is a repair video for a Sony TC-558 reel to reel deck. There are some reasons may cause the no- outputs on reverse play mode: (1) Bad play heads (2) Tape not aligned with play head (3) Defective amplifiers (4) Bad contacts in forward/Reverse switch. The issue on this unit was caused by the switch which is a easy fix. I'd like to share this video to all DIY fans so they have an idea to solv...
Marantz 2216B Receiver II - Thump Noise Repair and Bias Adjustments
มุมมอง 854ปีที่แล้ว
This video is to share how I repair the thump noise and perform bias adjustment for a Marantz 2216B receiver. I hope it will help other DIY fans when encountering this type of repair works.
Marantz 2216B Receiver I - Static Noise Repair
มุมมอง 1.8Kปีที่แล้ว
The static/poping/thump noise is always a common issue for a vintage amplifier/receiver. In this unit, the electrolytic capacitors on right channel were working fine, and the problem occurred at the defective differential transistor Q702. This dual transistors were not match each other because the leaks inside due to the age. The static noise was solved after I replaced it with a new 2SA789. I ...
Marantz 2230 Repair Part 3 - Lamp Replacement and RCA jacks Repair
มุมมอง 1.3Kปีที่แล้ว
This is my personal repair experience for Marantz 2230. Since there is no detailed information regarding how to replace the light bulb, so I tried by removing the face plate at first as same as I did on other Marantz receivers. But it ends up the easiest way is to do it from top of light socket inside of receiver. I think this video may help other DIY fans when replacing lamps on their unit to ...
Marantz 2230 Repair Part 2 - Power Amp Repair and Adjustments
มุมมอง 2.1Kปีที่แล้ว
This video is to continue the power amplifier repair and the bias adjustments. After I recaped the left channel power amplifier, this Marantz 2230 sounds very good and free of noise. It really shows big improvement of the sound quality after replaced these old electrolytic capacitors.
Marantz 2230 Repair Part 1 - Power Amp
มุมมอง 1.5Kปีที่แล้ว
This is a repair video for a Marantz 2230 receiver. In the Part 1, I am sharing how to troubleshoot and repair a broken power amplifier. In next video, I will continue on other items include amplifier adjustments, preamplifier and some minor repairs. I hope these videos will help other DIY fans.
Sansui AU-D707 Amp Repair and Adjustments
มุมมอง 6K2 ปีที่แล้ว
Sansui AU-D707 Amp Repair and Adjustments
Hafler DH-500 Power Amp Repair III - Static Noise
มุมมอง 1.5K2 ปีที่แล้ว
Hafler DH-500 Power Amp Repair III - Static Noise
Marantz PM-64 Integrated Amp Repair - One Channel No Speaker Output
มุมมอง 4.3K2 ปีที่แล้ว
Marantz PM-64 Integrated Amp Repair - One Channel No Speaker Output
Sansui 9090DB Receiver Repair II - No AM/FM and Sound
มุมมอง 2.4K2 ปีที่แล้ว
Sansui 9090DB Receiver Repair II - No AM/FM and Sound
Hafler DH-500 Power Amp Repair II - Protection Mode and Fluctuating DC Offset
มุมมอง 1.6K2 ปีที่แล้ว
Hafler DH-500 Power Amp Repair II - Protection Mode and Fluctuating DC Offset
Servicing an Audioonic CC-2 Power Amp - Adjustments
มุมมอง 7132 ปีที่แล้ว
Servicing an Audioonic CC-2 Power Amp - Adjustments
Sansui 9090DB Receiver Repair I - Protection Mode On
มุมมอง 3.3K2 ปีที่แล้ว
Sansui 9090DB Receiver Repair I - Protection Mode On
Pioneer SX-3700 Repair - Protection Mode On
มุมมอง 2.3K2 ปีที่แล้ว
Pioneer SX-3700 Repair - Protection Mode On
Pioneer SX-550 Repair II - Sound Distortion
มุมมอง 3.2K2 ปีที่แล้ว
Pioneer SX-550 Repair II - Sound Distortion
Marantz 2015 Restoration Part 2 - Miscellaneous Work
มุมมอง 8012 ปีที่แล้ว
Marantz 2015 Restoration Part 2 - Miscellaneous Work
Marantz 2225 Repair Part 2 - Intermittent Sound Cutoff
มุมมอง 1.4K2 ปีที่แล้ว
Marantz 2225 Repair Part 2 - Intermittent Sound Cutoff
Marantz 2225 Repair Part 1 - Lamps Replacement
มุมมอง 2.7K2 ปีที่แล้ว
Marantz 2225 Repair Part 1 - Lamps Replacement
Marantz 2015 Restoration Part 1 - Amplifier Repair
มุมมอง 1.5K2 ปีที่แล้ว
Marantz 2015 Restoration Part 1 - Amplifier Repair
Marantz 2215B Repair Part 2 - Bulbs Replacement & Bias Issue
มุมมอง 2.6K2 ปีที่แล้ว
Marantz 2215B Repair Part 2 - Bulbs Replacement & Bias Issue
Very interesting, thanks a lot. I have the same model.
please help...i have yamaha m2 amp...my spendor s100 has 3 inputs on back of speakers...low , mid , high...so i had yamaha m2 high and lows on channel A and lows on channel B...never any problems sounded great... now today i go to hook up a Rel sub high level red to right A+ channel Yellow to B+ channel and black to right negative A-...all of a sudden no sound from channel B...on the back I turn the left volume gain control and it workd but the right volume gain and nothing...I thought maybe the Rel sub shorted out a fuse...i took gront pannel off and can' see any of those fuses out...is there another place i don't see where a fuse may be blown out❓
someone knows how to restore the white/grey cabinet paint?
I have sansui this amplifier but I can't connect
Thankfully
Any chance you could post the list of parts that you used? Thank you
BIG capacitors 😲
This was the first informative video on stereo that held my attention Thank you !
Ok....❤❤❤.
Hello. My yamaha B2 humming. Any suggestions?
You missed some steps .You took 4 screws on back, swung around to front view and the plate was off. What goes?
Hello which light do you use for the meters ? Thanks
Muchas Gracias !!! Tengo el mismo problema con mi TC-558 pero ahora gracias a su video y su detallada explicación sé que también solucionará mi problema, Gracias nuevamente.
Have a GX-635D recently but it does not play, it powers up, but no green light comes on, nor any function works like rewind or record. Not sure what that would be. There is tape mounted on it. But no movement of the capstan or motor sound
From your descriptions, it seems that your GX-635D may have a defective power supply problem. I suggest to check the FUSE PC board TH-2040. There are four fuses on it. The followings are their power supply functions: (1) Fuse #2 - capstan motor (2) Fuse #3 - reel motors (3) Fuse #4 - record/play amplifiers (4) Fuse #5 - logic control board which handle play/stop/forward/reverse switch functions. If all fuses are good, then you may have defective components in the power supply board which requires further diagnose and repair.
@@VintageAudioFan Thank you for your answer, I'll look into that as it is a good indicator and starting point to see if the problem is visible there. But a blown fuse is always an idicator of something failing thus in need of a check I've noticed that these are prone to transistor failure as well. Maybe that is what's the issue but until then I will tackle that first. Replacement shouldn't be a problem but maybe the lack of a scope or is it possible to work on it without a scope
Just great. Thanks
muchisimas gracias, muy ilustrativo, you safe my ass
Excellent video, thank you very much for your valuable information. I want to make a clarification. The layout of the pins. NTE234 (1-E, 2-C, 3-B) 2SA906 (1-B, 2-C, 3-E With NTE234 you have to change the position. Greetings.
Thank you for posting this little class. Of course way better than AU -719. God bless you friend.👋
can you help me how to fix my headphones making noices ?
Please see email for my reply. Thanks.
Awesome…I’m not an owner of some tuner like this right now but I’ll will, so thank you in advance!
Thanks.
i have this amp and like it a lot...🎶
wish you lived close...I would feel comfortable if any of my gear needed repaired or refurbished...
Thank you. Please send me your request via email and I will help you the best I can.
Sir, How to redo the belts on a Fisher DAC-196? Same 5 disc, but it is a horizontal stack with a lift assembly. Thank you.
From the design to the sound reproduction, "all way round" JBL is a masterpiece.
Alguien que traduzca el video pliss
amazing that this is such a common problem, it's like, you had one job
Very nice video! What substitutes did you used for replacing 2sa697 and 2sc1211? Thank you
The data sheet shows 2SA697(PNP) - Pc: 0.5 W; Vcb: -65V; Vce: -60V; Ic: 0.7 A. I replaced it with my stocked transistor 2SB647A - Pc: 0.9 W; Vcb: -120V: Vce: -100V; Ic: 1 A which is an upgrade. It is paired with the 2SD667A (NPN). So 2SB647A/2SD667A should work.
Ok, thank you for you quick answer.
I have too a sx 550 which after 10 min or so dc offset starts gradually to jump between 1v to -1v on the left channel and puts a soft background crackle into the left speaker which is not affected by volume or any other controls. I'm a novice into electronics and maybe please you give some hints where to start from. Thank you
If there is a fluctuating voltage on DC offset and with a static/cracking noise, it is generally caused by a defective differential transistor in the power amplifier. I suggest to replace Q1 (2SA798) in the left channel on PCB (AF Ass'y AWK-061).
Thanks for your quick answer. I will try to swap them one to another to see if the problem moves to the other channel. What would be the correct substitute for the 2sa798 if the one on the left channel is defective? A matched (hfe and vbe) pair of ksa992fta would do the job? Thank you a lot and sorry for the disturbing.
So, I recently found a guy selling the entire system, the stack: KC992,KM992, cassette deck KXW892,KT592, kenwood courts synthesize and the pair of speakers are the JL1002 4 ways 180W all in great condition and it comes in cage made by them too, all for 200$. I think I got a good deal. I’m gonna get a turntable for it and I should be set for a while.
I need some advice on the cr 1020 receiver. When I turn off the power switch, there is a big bang in both speakers. I don't know where the error is and what should I check? When the receiver is on, the relay is protection, but I can't figure out what causes the boom in the speakers when it's off. Thank you in advance for the professional answer. Peter
I had same problem before. I think if the receiver is out of the protection mode, it usually means the DC balance is near to 0 V. However, when there is a bad contact inside the relay, it always make noise or no sound to the speakers. I suggest to check the relay or replace it.
Do you have parts for Sony MDR-G75 ?
Mine is MDR-G73. The speaker/drivers and cord are still working. The rest of the parts are bad.
I dropped off the exact model to be serviced for a low hum in the "tone in/out" switch. My buddy, who is generally very knowledgeable when it comes to electronics repair, declined to service it because it appeared to be difficult to take apart and find the issue. Any recommendations or tips you can give me to relay to him would be appreciated.
The hum noise usually comes from the grounding problem which may indicate there is a loose soldering joint in the circuit board or bad contact of a grounding wire inside the receiver. It may be also caused by other reasons. But it is the good start point for the troubleshooting.
Great work, I like to know the transistor have to match pair before replace or not
Yes, it will ensure the amplifier working properly.
Is this the same sound quality as a 919? I am in North america and would be getting a D907. I am worried if its a good buy for about 900 USD fully recapped
Yes. It should be same. The D907s were made for Japan domestic market. The circuit and parts in D907 are same as the 919. The difference is D907 needs a 100V AC power source which is required to buy a voltage converter transformer to bring down 110V to 100V for use in USA.
Price??
They are selling at between $100 to $200 in eBay.
😅😮o O😮😅😅😅😅😅o 😅😅😅
Здравствуйте! На моем Teac x3, через 20-30 минут, сильно нагревается правый мотор. Поменял местами, такая-же картина! Не приходилось встречаться, с таким случаем, куда копать?!!!
I suggest to check the brake on the motor. It may need an adjustment.
@@VintageAudioFan....Благодарю за совет! 👍👍👍🍺🍺
Could be a number of things to check as well as motor run cap. These are AC reel motors so they do have motor phase advance caps- the reel switches in these decks which are the larger Alp switches to the rear are known to open and some short- maybe the fast wind one is shorting- you need to check with a meter- I have had two in my shop recently both with opposite effect.
Great video,much appreciated 👏👏👏
Glad you enjoyed it
Thank you.
You're welcome!
I have an A 3440. FF and RW work but it doesn’t play or record. It’s been sitting for about 40 years.
It seems like you also have a dead capstan motor issue.
I have the M65/C65 set with a pair of AR Acoustic Research SRT380 Studio Recording Transducer speakers, and it sounds amazing!
The Yamaha's amplifiers are very musical and detailed. I am glad that you have such good combination.
Nice!
Would you say the same goes for a M65??
Yes. The adjustments for bias (idling current) are same. However, confirmation of Auto-A class function needs more than 20 mV (vs. idling) for M-65. And the service manual of M-60 shows exactly bias range which is 100-120 mV.
Great lessons here !!! Thank you for your time and patience to explain !! I have this same unit marantz 2230. When I turn it on everything is ok, but after a while (few minutes) one of channels starts to output cracking and loud garbage. Any idea what it can be ?
It is a very common issue for these type of vintage receivers. Because the aging components may cause the amplifiers not working properly. A leaky transistor may change it's current gain (when the transistor temperature increases) in the amplifier circuit and causes the cracking or static noise. Please see my other videos for how to solve this issue.
A nice repair, it seems you have cleaned it also, it was very dirty...pretty good job ! Bravo from France
sublime i hav 3340s i wouldnt try that. save a realteck the headache lolo
Awesome job, So do you think is work p800 ?
I have a tick tick sound from speakers on some fm channels an not threw cassette deck nor turn table what could that be , a ground on antenna maybe like I say not all fm channels do this an it’s very faint tick tick tick like a clock an does not turn up with volume it’s just there on some fm channels an meters for channel are around 3 to 4 signal strength lesser I don’t here it atall ? Any one know if it’s just a ground , it’s only on some fm channels not all an I don’t use an atall
Simply impossible to get these on. I will order a different brand
you could have told us there is a difference between the left and right pad lol
Great video , i think i have the exact same problem but wont the different transistor affect the sound quality?