How to select Audio Generator Tube amp or Radio repair D-Lab electronics

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How to select Audio Generator Tube amp or Radio repair D-Lab electronics
Загружен 15 апреля 2018
Many inquires over the years on this subject. Since I had some down time, I thought it was the perfect time to provide my insight on choosing the proper ...

How to troubleshoot Tube guitar amps with pulse generator by D-lab
Загружен 17 января 2016
Having several amps coming in the shop with strange problems, I thought it would be good to share this trouble isolation method. yes, you will need to locate a ...

How to repair fix Vintage Fender Vibroverb tube guitar amp noise + sockets D-Lab
Загружен 23 марта 2017
Here's another great tube amp tip. Tube sockets can be a major trouble maker. A bad grid connection can melt down your expensive tubes. Always use top ...

How to fix Radio tube amp Transformer Hum Buzz Vibration D-lab Electronics
Загружен 9 июля 2018
Here is a generic method for repairing a vintage power transformer that has excessive noise caused by loose iron core lamination's. I utilized DEFT to dampen ...

How to check guitar amp frequency response Leader LSW-115 swemar audio sweep generator
Загружен 5 февраля 2017
A very cool high end of line amplifier tester. The Leader LSW-115 Swemar generator is a rare and valuable asset to your test bench. This instrument can assist ...

How to remove tarnish from vintage radio test equipment switches by D-lab
Загружен 14 декабря 2015
Here is a easy way to remove that black tarnish from rotary selector switches. In this example, I chose an Iwatsu 5702 oscilloscope. This problem can be found in ...

How to repair National NC-300 tube Ham receiver audio intermittent hum
Загружен 2 февраля 2019
The Dream Receiver. One of the all time greats. A highly desired receiver for AM reception. I love working on this model. I consider it the best receiver that ...

How to repair weak distorted channel Realistic SA 1000 home stereo amplifier D-Lab
Загружен 5 августа 2018
Purchased the little jewel of an amp on ebay. Seller was honest, stating that it had a bad channel, true. I was impressed of it's great cosmetic condition and ...

How to fix tube amp parasitic distortion Grid stop resistors D-lab electronics
Загружен 14 сентября 2017
This is a boutique tube amp modeled after a Fender Princeton. All was well until I cranked the volume and treble pots, then all hell broke loose. Loss of power ... ...

How to fix Noise Fender Bassman 50 tube guitar 6L6 amp D-lab electronics repair shop
Загружен 9 июня 2018
Lots of these Bassman amps rolling thru D-lab these days. This one is identified as a 50, seems to be the same as the others I have worked. It suffered from ...

How to Understand Tube guitar amp Tone circuits Frequency response
Загружен 20 марта 2018
D-Lab has had many inquires regarding tone circuits over the years. What is the best simple circuit. How do they work? Can you demonstrate their function?

How to repair Sansui AU-G77XII Integrated Stereo Amplifier No Output D-lab Electronics
Загружен 8 апреля 2018
This amp arrived D-lab in need of repair. Initially, I did not want to take it. Then I was thinking of past memories of repairing these in the Dorm USAF. I ...

How to signal trace Fender Champ guitar amp Oscilloscope stage test D-lab
Загружен 30 мая 2017
As requested, here is a basic signal trace method via oscilloscope + audio generator. This is the way I normally go thru an amp looking for loss of signal.

How to repair KT-88 tube stereo mono block amp Dynaco MKIII D-lab electronics
Загружен 8 апреля 2018
Just finished repairing a nice set of Dynaco mono blocks. these are great quality units. My Dad ran a set of these back in the day. Vintage tube amps are the ...

How to make a simple easy 4 8 ohm tube audio amp Dummy load D-Lab
Загружен 20 августа 2017
After many requests, here it is, the simple 4 or 8 ohm switchable resistor dummy load. Great for working on tube amplifiers. This one is a 25 watt model utilizing a ...

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