Hi,
I love the old Pioneer SX-727 I bought, but I have the snap crackle pop syndrome, as described elsewhere by almost everyone. The more I learn on this forum, the more worried I am about replacing the transistors on the head amp myself.
Based on advice to previous newbies, I bought 512-KSA9992FBUs to replace the 2sa725 transistors. I understand that the outside legs need to be reversed. Some advice suggests I replace 4 of the 6 transistors on the board (Q1,Q2,Q3,Q4). Others say just replace two, but I’m unclear which two. Here’s a picture showing Q2, Q4, Q6.
How do I manipulate the white plastic legs on the corner of the board to expose the backside of the circuit board?
THanks, Chris
I love the old Pioneer SX-727 I bought, but I have the snap crackle pop syndrome, as described elsewhere by almost everyone. The more I learn on this forum, the more worried I am about replacing the transistors on the head amp myself.
Based on advice to previous newbies, I bought 512-KSA9992FBUs to replace the 2sa725 transistors. I understand that the outside legs need to be reversed. Some advice suggests I replace 4 of the 6 transistors on the board (Q1,Q2,Q3,Q4). Others say just replace two, but I’m unclear which two. Here’s a picture showing Q2, Q4, Q6.
How do I manipulate the white plastic legs on the corner of the board to expose the backside of the circuit board?
THanks, Chris
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