VINTAGE STEREO REPAIR SANSUI 331 LED UPGRADE CONTROL DEOXIDIZE

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5 жыл бұрын

In this episode of Vintage Stereo Repair a customer brings me a Sansui 331 stereo receiver. These receivers were manufactured from 1975 through 1977 and is only rated at 12 watts per channel at 1% T.H.D. This unit only need a very minor repair involving replacing the incandescent fuse lamps with individual paralleled LED's and a dropping resistor. Also it needed a pot and switch cleaning with Deoxid D5. Donations to support my video efforts (and helping me purchase a new video camera) can be made at www.paypal.me/NorCal715

Пікірлер: 34

@beanmeup9902 3 ай бұрын

Incredible Channel! I'm giving a Thumbs Up and subscribing to encourage KZfaq to suggest your channel in everyone's Home Feed recommendations . . . your channel will definitely grow over time as more people find it! :))

@jp040759 5 жыл бұрын

I will cut off the lens tip of standard LEDs and then scuff the surface of the clear lens up to make the LED more diffused like an incandescent light bulb effect. Works great and is cheaper than top hat or convex lens LEDs. WOW. I made LED replacement too difficult. I installed a rectifier and filter cap to drive the LEDs. I like the simplicity of the inverse parallel LED configuration you indicated. THANX.

@Warpedsmac 3 жыл бұрын

I like very much how you appreciate the old methods of design and construction. I have this exact model...with the exact problem. Thank you Norcal715.

@chrisj315 3 жыл бұрын

Thank you for posting this video. My Dad’s 331 was unusable - it had terrible distortion and channels dropping out. All it took to get it working perfectly again was your cleaning routine with the Deoxit D5. It’s now in my living room driving his old Goodman’s Minister SL speakers and the setup sounds fantastic.

@markkram6497 Жыл бұрын

Great video. I have the same receiver with the same issues, dropped sound and one light is out. I got the receiver in 1974 with Infinity speakers and a Dual turntable. It sounded great!! I will be looking into resurrecting it in the near future. I have had a few receives since then but honestly none have as full a sound as the old Sansui.

@brianbarlow4410 2 жыл бұрын

This helped me figure out how to get to the lamps, also tightened amp chip,deoxit, and it sounds great! Thanks! another amp saved from the dump.

@eniojosevilchezhernandez5434 4 жыл бұрын

Excellent explanation of how to repair this stereo. I like your videos. Thank you bro.

@Contantq 5 жыл бұрын

That is really great that you save these old well built stereos. I really need to get the Deoxid D5 cleaner as I have tried another brand with mediocre results. Not in the mood to change out pots.

@georginaramirez1540 5 жыл бұрын

very good excellent explanation about the repair

@hhvictor2462 3 жыл бұрын

Nice insight regarding the large size of the AM antenna bar.

@teresitamontebon5342 3 жыл бұрын

Thank you so much your illustrations

@FireandFrostHVAC 3 жыл бұрын

Great video, thank you! I own the identical receiver/amplifier, it has been very reliable and sounds decent. I want to upgrade to LED’s as the bulbs are getting tired, as well as checking & replacing the capacitors as needed.

@ThePreyMantas 5 жыл бұрын

Love watching you troubleshoot your way through these things. Now.... if you could fix that "Wonky" camera, but how could we watch that! LOL :)

@theboys8701 2 жыл бұрын

Fantastic job mate! The brighter the better. Thanks for the Deoxit D5 tip, I have a 221. Fan mail / Chris , Toronto Can.

@harrysanders9941 5 жыл бұрын

Very nice, as usual !

@teresitamontebon5342 3 жыл бұрын

Very nice video

@mixinginthebox 5 жыл бұрын

Thank you..

@johnnybgoode1950 Жыл бұрын

Hard to find build quality like that these days.

@tonyt6301 3 жыл бұрын

I can’t get the solder to stick to the fuse holder when trying to solder in the new LED’s?

@hadebui 4 жыл бұрын

I have a Sansui 771 Quad Stereo Receiver, it has great sound, I want to improve it. I buy capacitors with the same characteristics (voltage and capacity) from a good brand or

@mariushmedias 5 жыл бұрын

It surprises me that they used such a big part of the circuit board to have that wide wave of traces from one area to another area... guess the soldering labor cheaper than insulated copper wires / ribbon cables?

@Warpedsmac 4 жыл бұрын

This was a feature of early Sansui design...they callled it Circuit Board Module (CBM) design. Allowed for easier replacement of boards.

@truthseeker4690 5 жыл бұрын

Had this unit in the 70's and remember it being really loud and clean with a set of Sansui speakers approx. 6" woofers. Can't believe it's rated at only 12 watts per channel?!?

@norcal715 5 жыл бұрын

Very nice receiver. And yes only rated at 12 watts rms!

@Warpedsmac 4 жыл бұрын

This is the next job to do on this unit...great video!!!! My father bought this Sansui 331 in 1976...listening to it today...seems to have more than 12 Watts RMS!!! Currently driving a pair of Australian Richter Mentor V (6 Ohm) bookshelf speakers....I made all my mix cassettes using this Sansui 331 and an Akai CS-M3 cassette deck from 1980 until about 1997. Love the quality of the Sansui. Thanks again for this excellent instructional video!!!. You have given me the knowledge to fix the display bulbs and scratchy selector knob.

@MrChin1230 2 жыл бұрын

Hi i hope you see this comment, i have the same receiver, but when i check the ac voltage of the lamps, it shows nothing. I double checked my multimeter to see its not the problem, and it isnt. So basically im not getting any ac Voltage when i test the fuse lamps . The thing is, I dont know if the fuse lamps are burnt and need to be replaced, or maybe its the connection to them which is causing the problem, because this is the condition the receiver got to me, what do you think the problem could be?

@norcal715 2 жыл бұрын

I will try and look up a diagram in the next few days.

@coyote5.02 3 жыл бұрын

How much does it cost to have led lights replaced in a radio like this. I just bought a sansui 6060 and it’s got the ugly green lights instead of blue.

@petercornell2002 5 жыл бұрын

Nice vid, thanks. Irritating background noise though.........

@GerardPinzone 5 жыл бұрын

How would you compare the quality to a modern inexpensive amplifier?

@Warpedsmac 4 жыл бұрын

You could buy this 331 from Sansui online or from vintage outlets for around $200 and would outperform probably 60 or 70% of modern amplifiers...do not be fooled by the 12 watt RMS output..teamed up with efficient speakers it would sound great I promise. I own one.

@GerardPinzone 4 жыл бұрын

@@Warpedsmac What do you mean by outperform?

@Warpedsmac 4 жыл бұрын

@@GerardPinzone Listen to one thru speakers of greater than 92db sensitivity...sansui has a tone you don't hear today.