Falcon maintenance: Phantom&CT60e

[Steve]

Please upload photos of your clock patch installation, both the patch itself and the SDMA area too

[qq1975b]

From the tests I can run on the test cartridge I haven't seen anything specially wrong. Only VGA tests doesn't work well once finished the first one.
Once in Desktop, SDMATEST makes noise when pressing play.
Which tests can I run to see if it works all OK? The demos I tried, worked OK. Gembench 6 in loop mode, also OK.

[Steve]

I use BadMood as the ultimate Falcon stability test (The doom port for Falcon, uses DSP)

[qq1975b]

Please upload photos of your clock patch installation, both the patch itself and the SDMA area too

Here there are. I have noticed that the in circle ones make contact.

20220222_182345b.jpg (309.71 KiB) Viewed 2730 times

20220222_182257.jpg (415.02 KiB) Viewed 2730 times

[Steve]

Ok well you haven't 100% finished installing the clock patch yet:

June 1st modification towards the bottom:
https://www.exxosforum.co.uk/atari/last/ ... /index.htm

Example in one of my service blogs:
https://www.exxosforum.co.uk/forum/viewt ... =18&t=4813

Also the soldering does look a bit rough, did you use flux? I would de-solder the patch wires, clean the area with IPA and re-do personally. Your SDMA trace patch looks good though!

[qq1975b]

Wires rechecked and resistor installed. But the noise in SDMATEST remains the same.
BadMood makes a lot of noise.............................

I have taken the CT60e out of the Falcon, the PicoPSU too and replaced it with the original Falcon PSU....The boot screen is blue with the letters and logo in white colour (VGA output)

[Steve]

Wires rechecked and resistor installed. But the noise in SDMATEST remains the same.
BadMood makes a lot of noise.............................

I have taken the CT60e out of the Falcon, the PicoPSU too and replaced it with the original Falcon PSU....The boot screen is blue with the letters and logo in white colour (VGA output)

Okay only other thing to do is turn the delay OFF on the patch. Just de-solder the solder bridge with some wick (on the patch pcb) Then re-test.

[Steve]

By the way - I just noticed a resistor and cable soldered to the heatsink on top of the videl? what is that?

https://www.exxosforum.co.uk/forum/downl ... p?id=23951

[qq1975b]

By the way - I just noticed a resistor and cable soldered to the heatsink on top of the videl? what is that?

https://www.exxosforum.co.uk/forum/downl ... p?id=23951

It is for the SuperVidel sync

[mikro]

Is it really soldered to the heatsink? If so, why?