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Hi; I am looking to replace a smoked SVI 3206 B IC that runs in a Technics SA-GX700 Amplified Stereo Receiver Manufactured in the early 1990's. I have not been able to find a replacement. I see SVI 3206 D AND C but no B. I was wondering if someone can help me? Sellers that deal with distrubuters do not have them. This is a amplifier Chip.

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  • gapper10 Sep 10, 2010

    Reply: I do not know Panasonic Suppliers.

    My Electronic Repair Depot said they checked with Panasonic and they just said the Chip was no longer available.

  • gapper10 Sep 10, 2010

    I looked at a Parts Store site and was looking at that Panasonic parts section shows the parts, but nothing corrisponds to the SVI3206 B. Just the other 2 the C & D. I also need a 6 amp 125Volt horazontial glass fuse to replace the one that blew out when the Chip got fried by what my Electronic Repair man said was most likely a short at the speaker connection at the back of the receiver by moving it around when it was on. He also said that Panasonic revised these receiver amplifiers over the years, so the connections at the back were less likely to short if the receiver was moved while on. He told me to just keep my hopes up, and keep plugging my way around the internet, and i should eventually find something. So that is what I am doing, because these new receivers I do not like the sound quality at all. They are simply to complicated to run, and sound like a tin plated ash can. Thanks for your help so far, and I will let you know how I make out in my quest.

  • gapper10 Sep 10, 2010

    I found someone that had 1 and I purchased it today. I should receive it in a week or so. Good thing I am a good desolderer and soldierer. Looks like 13pins to deal with. At least there is only one side.

    A Electronic Shop gave me 2 fuses for it free, because they said it is not worth the paperwork when there that cheap. I was wondering if there may be any surprises I should be aware of before I start the repair? Thanks.

  • gapper10 Sep 10, 2010

    Yes I will go over the boards with a fine tooth comb when I take it apart. The Repair Depot did not mention of any internal shorts. They told me that they thought it was caused by a short from outside the Receiver. Someware possibly corrosion at the speaker plug, for which they might have been right, because I found one of the connectors at one of the speakers Rusted, and looked heavily pinched within the connectors part that holds the centre wire going through the connector. I already changed that connector in preperation for the resumption of using it. I will let you know how I make out after I receive the Chip in about 7-10 days. Thanks for the info. Jeff...

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I seem to recall that the C and D variants are direct replacements. Check with an authorized Panasonic parts supplier. Check with local service shops for SVI3205 as well. All of these are interchangeable.

Dan

Posted on Sep 09, 2010

  • 1 more comment 
  • ABRsvcs Sep 10, 2010

    I have checked this further and yes, all variants of this IC are no longer available. However, check with some local shops that work on audio gear, they may have one lying around. I know that I still have a few in my shop. These were often purchased in groups of 2 or more, so there may be a few around still.



    You can also look for SVI3205 and its variants as well.



    Dan

  • ABRsvcs Sep 10, 2010

    The letter variants should work just fine. If I read your comment correctly, you found the "C and D" varitants. Those are pin compatible and should work just fine.



    Dan

  • ABRsvcs Sep 10, 2010

    Verify that the solder connections for the IC are all good. Check the solder connections at teh voltage regulators as well. It is possible that poor solder connections at the regulators can cause failure as well. The fact that the fuse was blown sugests that the IC has shorted internally, but you can't tell easiily. Be extra careful of solder splashes too.



    Dan

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