 Posted: Sun Jan 22, 2012 3:25 am Post subject: |
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| Thanks for the info. I see you are posting from Brazil too.
Curious as to where did you purchase the NJU7313AL? |
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| Posted: Sat Jan 21, 2012 11:30 am Post subject: sem audo |
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| Good morning, Messrs..
I had the same problem that was solved by changing the ci513 njm7113 card volume and 2 resistrores r503 and r504 of 4R7.  |
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| Posted: Tue Feb 13, 2007 1:33 pm Post subject: Marantz - Integrated Circuit NJU7313AL |
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| OK,
I will try all your suggestions and let you know later. Many thanks again. Cesar |
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| Posted: Sun Feb 11, 2007 9:30 pm Post subject: |
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| Typo for the first one ... more like
http://www.tritronicsinc.com/ |
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| Posted: Sun Feb 11, 2007 9:27 pm Post subject: |
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| ..Apparently the part in question has been discontinued from the manufacturer which I was not aware of, however it should still be available from distributor until they run out. Remember Al and Am suffixes are different packaging
Same IC was also used by Denon (which by the way own's Marantz now). If am not mistaking, part number for Denon was 2621853100 May want to check with Denon in Brazil & ask for info? http://denon.jp/asia/salescompdist.html Kenwood is another manufacturer that used the same IC on some of their models. (used the same generic number) What I'm not sure, if any of the following USA suppliers will ship oversears or not & may get to be rather expensive. May want to try locals again, but any of the following list the part; (All in US) www.tritronics.com www.mcminone.com www.kenwoodparts.com www.pacparts.com Good luck |
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| Posted: Sun Feb 11, 2007 12:12 pm Post subject: |
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| Dear Vtech,
Now that you thought me how to remove the board I run into another problem: The defective IC - NJU7313AL cannot be found in Brazil and I've tried to buy it from many international reputed component vendors web sites with no sucess due to the quantity desired, just 2 units. They only sell over 500! Do you know where I can buy them in few quantity? Many thanks again. Cesar Castello Rio de Janeiro - Brazil |
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| Posted: Wed Jan 31, 2007 2:03 am Post subject: |
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| Thank you for your thorough and quick answer. The board was so tight in its socket that I was afraid to pull it and break something. I will try it with more confidence after your instructions.
Best Regards Cesar Castello Rio de Janeiro - Brazil |
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| Posted: Tue Jan 30, 2007 4:18 am Post subject: |
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| Ok. they are strictly male/female snapped together. First make sure to remove any screws that are holding the board to the back panel thru any connector & by grabing the edge of the board and gently pulling up while holding the bottom board, it will disengage from its base. Trick is to make sure all the in/out connectors are free from the back panel so it can be pulled straight up without interference .....make sure the pins are not bent when going back to reinstall it. Depending on the board & it's position,, may almost have to remove the back panel
At first it may feel somewhat awkward, but it will disengage. You may use a contact lubricant spray such as "cramoline" to make removing a lot easier. |
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| Posted: Mon Jan 29, 2007 1:40 am Post subject: |
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| Thank you for the reply.
Here you can get the boards photos: [url]http://discovirtual.terra.com.br/vd.cgi?+_wi=1170033731-19536-1019380&_we=13%0A Password (senha) is 0C53D440 [/url] |
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| Posted: Mon Jan 29, 2007 12:48 am Post subject: |
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| The NJU73xx series analog CMOS switch IC is a rather common failure on many brands that use it .
Not familiar with the particular unit but as far as I know, majority of connectors are either pressed-in or snap-in type/style & should not be that hard to disconnect. Can you post a picture as to exactly what you have? |
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