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New power supplies for the ColecoVision?


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#51 -^CrožBow^- OFFLINE  

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Posted Wed Oct 11, 2017 1:48 PM

And another update:

The traces on the first version were too thin, so the power broke down too fast.

I'll receive the next samples within the next few days.

 

Question:

I've got a CV and a flashcart - but I don't have ANY of the accessories.

So I can test whether the adaptor works fine with the standard system - however, I'd need someone who could test and confirm that it's working with accessories as well.

 

Anyone up here who has the accessories for a free sample to test?

 

Only accessory I have is the expansion model 1. I do have the steering module, but never use it and besides that uses it own batteries as i recall?



#52 HDTV1080P OFFLINE  

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Posted Wed Oct 11, 2017 2:10 PM

The only two expansion modules to test with the ColecoVision power supply would be Expansion Module #1 and the Supergame module. The original ColecoVision power supply was not powerful enough to power Expansion Module #3 the ADAM computer (The ADAM uses the printer power supply to power the ColecoVision). Now if some one made a more powerful third party ColecoVision power supply maybe it could power Expansion module #3, however Expansion module #3 was never designed for use with the ColecoVision power supply.


Edited by HDTV1080P, Wed Oct 11, 2017 2:12 PM.


#53 Zonie OFFLINE  

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Posted Thu Oct 12, 2017 2:53 PM

A more powerful supply is one thing, internal wiring to handle the current of the expansion units is another. Not knowing if the problem was internal or external, I'd bet a closer look at the traces on the board might be in order. The supply may be fine, but the current drop internally on the board may be the issue? Anyone know? I have a nice little meanwell +5, -5, and 12V PWS I have yet to connect to a CV, but it is stable and works well as a bench supply.



#54 HDTV1080P OFFLINE  

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Posted Fri Oct 13, 2017 3:18 AM

Zonie, I would need to dig out the Coleco schematics to answer your question. However from my pass experiences using the system in the 80’s, and I also ran some extensive tests on the ColecoVision, Expansion Module #1, and Expansion Module #3 tonight that verified my memories were correct (Expansion Module #2 is just a steering wheel game controller and it has always puzzled me why Coleco named it Expansion module #2 when it does not even use the expansion slot). Then the address book dialer module that is pulse dialing only, was kind of a waste. Coleco could have instead included the feature in the released 300 baud modem if a extra phone jack was installed on the modem, or they could have released a 1200 baud or 2400 baud modem with built in auto dialer function. Why waste an expansion port for an auto dialer when a modem can do the same thing. The only advantage of the auto dialer was the hardware was at least half the price of a modem.

 

If one does not use the gray tray for Expansion module #3, and turns on both power supplies at once (the ColecoVision power supply connected to the ColecoVision) and (the ADAM power supply connected to the ADAM computer), the system still works since there is protection built in that does not fry the system with two power supplies at once (However I do not recommend doing this and I only left both power supplies on for 30 seconds or so. The system could become damaged if ran with two power supplies at once for a long period of time).

 

Anyways with the gray Expansion module #3 tray removed, and also the ADAM power supply completely removed. I plugged Expansion Module #3 the ADAM directly into the ColecoVision, then I also plugged Expansion module #1 ATARI 2600 adapter on the side of Expansion module #3. With the ColecoVision power supply plugged into the ColecoVision, I was able to use the ATARI 2600 adapter perfectly fine for picture and sound while it was plugged into Expansion module #3. However as soon as I removed Expansion module #1 from the side of Expansion module #3 the ADAM computer, I was able to see and hear the Smartwriter word processor, however the picture was a little distorted since it was like it was not getting enough power. However, my point is the ColecoVision power supply is powerful enough to allow one to see and hear Smartwriter, however the quality is poor and not useable. Even the ADAM printer power supply sometimes is not powerful enough to power everything hooked up to the ADAM computer. When the third party 2MB memory expander, two serial ports with parallel interface card, and hard drive card were all used at once, one also had to use a third party more powerful power supply for the ADAM computer so that everything worked properly.    


Edited by HDTV1080P, Fri Oct 13, 2017 3:32 AM.


#55 nick3092 OFFLINE  

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Posted Fri Oct 13, 2017 7:34 AM

The only two expansion modules to test with the ColecoVision power supply would be Expansion Module #1 and the Supergame module.

Three, actually. The roller controller intercepted the power supply for 5v before going into the Coleco. Although its current draw is probably minimal, still worth testing.

I have module 1, roller controller, and will have a SGM sometime in Dec (hopefully).

Edited by nick3092, Fri Oct 13, 2017 7:48 AM.


#56 HDTV1080P OFFLINE  

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Posted Fri Oct 13, 2017 12:55 PM

Three, actually. The roller controller intercepted the power supply for 5v before going into the Coleco. Although its current draw is probably minimal, still worth testing.

I have module 1, roller controller, and will have a SGM sometime in Dec (hopefully).

Yes the Roller controller should also be tested, since like you mentioned it gets power from the ColecoVision. However when I was talking about Expansion modules, I met physical modules that plug into the Expansion module interface on the front of the ColecoVison.






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