Hello,
New here. My father has a Sansui 5000a and it's got some issues. It does have the original capacitors yet, nothing has really been upgraded/replaced. He has 2 issues. The first one is that the power transistor on the heat sink keeps blowing and putting the receiver into protect mode. He hasn't been able to figure it out yet, but said obviously something is overdriving it. Weird thing is that about 30 seconds before it blows, we get a strong smell of peanut butter.
The second is a little less destructive. After just turning it one, the left side speaker will always get static-y and then stop. Turn the balance to the left and pop it with a quick crank of the volume and it comes back on. Once it had been on for 15 minutes or so, this annoyance would stop and it would be fine. It's had this issue since I was a little boy back in the mid 70s. He always attributed it to static build-up in the receiver. Wondering if they could be related since (IMSMC) it seems to be the left side channel that's blowing the transistor.
New here. My father has a Sansui 5000a and it's got some issues. It does have the original capacitors yet, nothing has really been upgraded/replaced. He has 2 issues. The first one is that the power transistor on the heat sink keeps blowing and putting the receiver into protect mode. He hasn't been able to figure it out yet, but said obviously something is overdriving it. Weird thing is that about 30 seconds before it blows, we get a strong smell of peanut butter.
The second is a little less destructive. After just turning it one, the left side speaker will always get static-y and then stop. Turn the balance to the left and pop it with a quick crank of the volume and it comes back on. Once it had been on for 15 minutes or so, this annoyance would stop and it would be fine. It's had this issue since I was a little boy back in the mid 70s. He always attributed it to static build-up in the receiver. Wondering if they could be related since (IMSMC) it seems to be the left side channel that's blowing the transistor.
transistor subs - Google Sheets
here is a list of noisy transistors. check the 5000a service manual to see if any are in there and replace on sight. The issue with the blown output device is from blown components downstream, you'll need to troubleshoot the amp to find those components
here is a list of noisy transistors. check the 5000a service manual to see if any are in there and replace on sight. The issue with the blown output device is from blown components downstream, you'll need to troubleshoot the amp to find those components