The wireless rear surround speakers for my Logitech Z-5450 5.1 Speaker System failed.
I discovered through some research that Logitech had used inferior capacitors in the radio and power supply circuits; mine was a common problem.
I found Oscar through Google and asked him for help in repairing my speakers. I gave him several links to sites where this issue is discussed and which capacitors others had replaced to get the speakers working again.
He did a great job and the work was done very quickly.
I have to note that this was a very difficult project because I only gave Oscar the rear speakers, not the entire system. He could not directly test whether he had actually fixed the speakers.
When he dropped off the speakers he gave me a small bag with what looked like 2 dozen little capacitors that he had replaced.
After Oscar left I took a look inside one of the speakers to see his work and I was shocked to see how clean it was. The soldering work was so clean I could not tell that any work was even done.
The only proof I have that he did indeed replace all those capacitors is that the speakers now work great!
That night, I plugged them in at home and they paired to their radio immediately and have been working, without issue, since.
It's been a year now and they have literally never missed a beat.
The next time I need an electronics repair, I will call Oscar.