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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Update: Technics SA-222 Stereo Part Number
Hi,
Thanks to everyone for your suggestions. I found the part number for this IC, # SVINJM4559DD. NTE 778A is a replacement, which I did not have, but I used a LM1458 and this fixed the problem. Brad IC "401" (8 pins) in the phono preamp circuit is defective in this Technics SA-222 Stereo. "4559DS" is a number on the IC. Can you tell me the Technics part number for this IC? Also, where is a good source for hard to find ICs? Thanks in advance, Brad Before you type your password, credit card number, etc., be sure there is no active key logger (spyware) in your PC. |
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Update: Technics SA-222 Stereo Part Number
Brad wrote:
Hi, Thanks to everyone for your suggestions. I found the part number for this IC, # SVINJM4559DD. NTE 778A is a replacement, which I did not have, but I used a LM1458 and this fixed the problem. Brad IC "401" (8 pins) in the phono preamp circuit is defective in this Technics SA-222 Stereo. "4559DS" is a number on the IC. Can you tell me the Technics part number for this IC? Also, where is a good source for hard to find ICs? Thanks in advance, Brad Before you type your password, credit card number, etc., be sure there is no active key logger (spyware) in your PC. 1458 is a first generation dual(quad) opamp. I'm glad it works, but there are much better chips out there. Even the venerable 4558 was better IIRC. jak |
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