Thanks! I saw those PA1001A's from China on eBay but I wasn't sure they would work since there's really no description. I will order a couple of those. I do have an SX-780 and an SX-980 with similar looking chips. Do you know if these are the same as what's used in the 1280s?Others may ask why you may need the chips but I'll give a source. Ebay for the PA1001A. Their from China but I've had good luck with them. Only had bought a few but all worked well.
The PA1002 is a different story. Never tried one from China and they want $30.00. Ouch!
You might find a donor tuner board on eBay that has the chips. I'm sure you've looked into it. Managing the cost is a concern.
Also the chips are found in other manufactures receivers.
Well, I'm not exactly sure what's causing my issue, to be honest. Based on my "Internet forum" research I thought maybe the chips were the root of my problem. The receiver sounds great and operates well except for the tuning meter. The meter dial seems to be stuck straight up in the middle. It never moves, even when I'm rotating the dial, it's frozen. FM seems to work fine and I can tune in stations, it just makes it a little more difficult to fine tune since the tuning meter doesn't move. The signal meter operates perfectly. I swapped out the meter with another from a donor unit that was in great cosmetic shape and it didn't fix the problem. Still stuck directly in the middle. Any ideas?Rarely do both die, and we call the PA1002(a) "unobtanium". It's an op-amplifier muting chip that acts like a protect circuit. The PA1001 is a stereo decoder.
Pray tell, enlighten us on their demise and your need.
Thanks. We just tried this with both of the tuning meters. The original one and the replacement I got from a donor unit. Not moving. Tuning dial stuck in the middle. Signal meters work great and radio works. What actually controls the tuning meter?Clip the meter leads to the tuning meter and select DC mv's. Tune in and out of a station slowly and see if the DMM mV's responds to the tuning. You'll see what's going on and get a feel if the board/chips are working.
The Onkyo TX-x500 MKII's top two receivers can't be considered sleepers anymore. Time will tell how our own group's learning will effect other "sleepers" too but, the TX-8500 MKII and TX-6500's have exited the original "fog". 2012 posting (things have changed) and people have woken up.....not these "sleepers".
Premium classics they are.
Sure did! Apologies folks.This thread is about an SX1280 Pioneer you are hi-jacking this thread. Thanks for your info.