Fabrice Labrousse

Yes it's a brand new and tested CNY65B

Thank you for the reply I tested all resistors R10, R11, R12, R13, R14 et R15 and they are fine. Q3 (TL431) is also fine. Output voltages are still 6.28V and 14.23V

Hi. I just recap an ASP34-4 power supply for my Atari 1040 STF (also found on some STEs). I followed the Exxos page and Exxos values for improvment https://exxosforum.co.uk/atari/last/psu/#ASP34 C5, C4 : 47uF 350V (33uF 350v replacement) C15, C14, C7 : 680uF 35V (330uF 35v replacement) C13 : 4700uF 16V C12 : 4700uF 16V (2200uF 16V replacement) I also changed transistors Q2 (BU508) and Q1 (2SC1384). Here is the schematic of the ASP34-4 Astec_ASP34-4_PSU_schematic.pdf After reassembly I tested the output power supplies using a 2.2 Ohm (20W) load for the 5v output and a 10 Ohm (20W) load for the 12V output rail. Now when reading the output voltages, I obtain: 6.4V instead of the expected 5V 14v instead of the expected 12v Not being an electronics specialist, could you tell me on which components acting to try to bring the voltage rails back to 5v and 12v? Thank you for your help.

Unbelievable ! I did not do anything and it works again... What happened ? The Controllers were well plugged... I even changed them... and now it suddenly works again.

Thank you for the hint. I’ll try the fix

Hi there. I have some trouble with my Colecovision. The blue menu that starts before each game, displays in a flash and the games follows on by itself without the possibility of selectionning any starting option. Any game works fine, but the blue menu in not accessible. Would it be the ROM ? Best

I know it's a bit late but did you get a solution in the end ?

Hi Sparkoids I'd like too to change the Bios. Did you find a solution ? Best

Did Anyone tried an adaptator to change the Coloco VIC to an ATARI TIA ?

Did you get the reverse-engineered schematics of ChildOfCv ? Maybe it would help you to find the issue to this mod.

Great job ! Awesome !

Hi there. I'm very interested by your researches as I also think it IS possible to get an ATARI 2600 PAL from a SECAM one. I got 5 Atari 2600 SECAM and I'd really like to grab all the colors from them. Is your project in stand by or did you finaly had a solution to archieve this ?

This is an interesting project as indeed there is no shcématic on the net for this motherboard (maybe i'm wrong). Late post it set by october. Is there any news about your researches ?