fiesta75

Responses from fiesta75

AAA vs DDD...
I have a vinyl copy of Zappa's Joe's Garage, DDA. It's excellent. 
What's in your CDP tonight? the minority report
Kendra Smith - Five Ways of Disappearing  
testing a crossover
imhififan - That is an excellent catch. I was beginning to think along with rodman, that maybe the problem was outside of the speaker crossovers. I think you may have nailed it. I suppose the single short could have caused both channels of the amp... 
testing a crossover
imhififan - That was very helpful, thank you! 
testing a crossover
**likklegerry - Small difference between the original capacitor values and the ones you installed will not cause failures of the amplifiers. If anything, it would have a SLIGHT chance to damage the tweeter or midrange driver. Since it appears that... 
testing a crossover
Here are my posts from that day: 06-16-2021 5:40pmOkay, its been a rough couple days. I just got done drawing the schematic and looking at the words and measurements again. Just one note, do all measurement in the resistance mode, not in the diod... 
testing a crossover
rodman - Just FYI, I did explain that the diode function test was to verify the charging and discharging of the capacitors. This was in my post of 6-16 @ 7:06pm. His answer showed there was no longer a short at the inputs of the mid/hi amp connect... 
testing a crossover
I'm curious, do you have a list of parts that were replaced when the amp was serviced? A list from the first repair and one from the second repair might shed some light on a potential cause for the failures. 
testing a crossover
I don't believe there is a problem that exists on the crossover any longer. Let's just do a few more tests.  
testing a crossover
The fact that the speakers and amps worked of a couple or more hours is a hint that the problem may not be in the crossover. Are you SURE that when you bi-amped the speakers after getting the amp back from servicing that you didn't forget to remov... 
testing a crossover
I didn't know you were in Bulgaria, that explains the delays in communication. I think a few more tests are the only thing that is required to conclude that the issue is solved. I'm still willing to try. 
testing a crossover
The testing of the mid/hi input terminals showed the caps at that end of the circuit were charging and discharging. No shorts or problems were noted in that particular test. 
testing a crossover
In one photo I can read 3.9uf/250V. When you drew and label the components on the circuit board the 4.2uf should have been 3.9? 
testing a crossover
Stop, I would not strip any parts off either board. The data, answers to my questions, looked promising. You’ve already done a lot of visual inspection and testing. The most recent pictures, the cap with the blue circle around it, what is that? Su... 
testing a crossover
likklegerry - Just forget that question, I already understand. Providing your crossover passed the test using the diode mode at the mid/high bi-amp inputs, which it appears to have. I think you are good to go. Just perform that same test with the ...