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3 hours ago, dhe said:

Given my recent bad experience with ChinaRam, I believe a basic TL866 programmer is worth the money, just for it's ability to check ram!

It would seem the forging bad chips has become a really industry in China.

Is the TL866 able to test the 4116? I didn‘t see this in the manual or in the chip-list.

I have a TL866.

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I don't know about that one, I used it to check a 8K static ram. Unfortunately my TL866 is at work - far far away...


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Posted (edited)
22 minutes ago, wolhess said:

Maybe I will test to change the Elkos!

A good idea!

Advice: Turning the rotary potentiometer in the PHA2037 more to the left sets the color saturation higher.

Before you do anything, make photos to see how it looked before.

Edited by Sid1968
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On 4/20/2020 at 10:32 PM, wolhess said:

For me the best picture currently is with a PHA 2036 and the Sony LCD TV. 

But I will try some other configurations in the Next days.


I have a PHA 2037 (RGB Modulator) too and I bought a line doubler OSSC from https://videogameperfection.com/products/open-source-scan-converter/


So I have some possibilities.


The best will be a FA18A mk2, when it is available.

I agree,


After lots of tests with different monitors and video converters the solution for me has been to use the PHA 2036. Here are the steps:


1) Luminance signal thorugh VGA converter on LCD monitor



2) Components cable on LCD monitor



3) Components to VGA converter on TRC monitor



4) Internal components to RGB converter




5) PHA 2036 on LCD monitor



I'm really surprised of the quality image obtained with only the RF modulator, it seems composite video instead. Thank you @Flottmann1 😉


Next step will be to open the PHA2036 and try to get the video signal before the modulator and see what happens. I hope to have a little bit better quality. We will see...


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The best solution: composite video.

I thought it would just be soldering an RCA to the video signal before to enter into the modulator as happens with the ZX-Spectrum but the PHA 2036 that I have is the one with a plastic case, not a metallic one and it has been a little more entertaining. Basically I have installed an adapter circuit and now I already have composite video. Without obviously becoming RGB signal, the change from RF to composite is noticeable.


The adpater circuit


The "modulator" with audio/video outputs


Video signal on TV



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