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That is very interesting! I have a Samsung LED TV that I bought used in 2015. It is used day in and out and its image is as fresh as the day I got it (from a forum member). No image retention or noticeable degradation.

Hi - the Bravura was just below the Bolero. DD stands for Direct Drive - the driver tubes (12BH7) where plate connected to the power tubes grids and were powered between both a positive and negative DC rails to allow it to "Float". It was a terrible idea - the moment the driver tubes goes wonky...

Linked-In is a good place to start. The "Facebook" for professionals.

I stumbled across this schematic that I drew out of a Steinhart TVP200 amplifier. I thought it might be of use to post it here for anyone that need to understand how most GSA amplifiers were put together.

I use Osram and Philips Warm White LED bulbs in my place and they emulate the warmth of regular incandescent bulbs very well without the energy guilt.

Here is a video of it playing on the bench.

According to the laws of thermodynamics you are absolutely correct. But since I am fault-finding I need to have access to the bottom of the unit. I have a strong fan that blows a current of air over the whole unit as it is operated. And the cloth on the bench is pure cotton.

I did not want to write anything on the forum before I knew I could get life out of the unit. In November 2022 the late oom Johan Potgieters son contacted me to help with the Halle Amplifier. The amplifier is quite elaborate. 100 watt per channel, servo bias control, overload protection as...

If you cannot find incandescent bulbs for a dim-bulb tester simply use a 100 watt 22 ohm resistor. The only trouble is you cannot see the resistor doing the limiting work.

A side-note.... will there be a crack-down on all the govment institutions where 2-bar old-style heaters are burned 10 hours a day beneath an office desk? Even here at the Cullinan dump site the people there have one of those dreadful heaters burning in an open gate reception office. And not...

Who here can remember that back in the early 2000s Eskom had a hard country-wide drive where you could exchange your incandescent bulbs for CFL bulbs free of charge? They can come and audit my place. I only use 3 and 5 watt warm-white LED bulbs everywhere. Geyser is on a timer and I use a gas...

Here is a link to me installing a Starmap kit on a LP12 - we have sold quite a number of these kits over the years, made locally.

It is simply beautiful! Engineering par excellence!

Making sure it sounds good

Thats a SONY Espirit Preamp!

That is a good question! 20 years ago I considered equipment made in 1980 to be vintage. Now it really is vintage. Let's imagine its gear made before 1983-ish. Before the birth of Compact discs?

In November I replaced all the offending capacitors in my GAS Thoebe preamplifier and one blown transistor on the phono card and it is sounding as fine as ever. It measures incredibly well on the Audio Precision analyser

www.jico.co.za

A Christmas time classic! The Charlie Brown Christmas record by The Vince Guaraldi Trio

Heatsink pieces can be bought from Semiconductor Solutions. Semiconductor Solutions Cnr Regency & Sovereign Streets, Route 21 Corporate Park, Irene