Tips for repairing select/reset buttons of Atari 2600 Jr?

[Tips for repairing select/reset buttons of Atari 2600 Jr?]

There's a flex mylar circuit under the switches that connects to the motherboard. You can try to clean it, but if the traces are worn out you'll need a replacement.

A much simple solution, if you don't mind about originality, is to install two pushbuttons somewhere on the case and solder wires directly on the board.

You can see a couple examples in this thread.

I was thinking about pretty complicated ways to repair the Select/Reset buttons (doing drilling and putting some buttons, using SMD buttons, putting wires with stick and others).

I asked for some help from my father, he used to repair electronics, and he came out with a novel way to repair Select/Reset buttons, as the buttons strip had one part uncovered and with very bad conductivity (oxide?, maybe because of environment and/or time), and the other covered part had very good conductivity, he raised slightly the cover and inserted three cables that then were soldered to the PCB, the buttons works great now! 8-) and I didn't had to drill the case .

Find annex some pictures if someone wants to do the same .

[My first Atari cartridges]

What was wrong with the other 4 cartridges?

 

Using a lot of isopropilic alcohol I've managed to get working the other four cartridges , now I've discovered that the Select/Reset buttons of my Atari doesn't work .

Seesaw looks like Atari Circus, but has man changed to a clown, and Fire Bird is like Demon Attack but with the original logo removed, now I'm pretty sure both are Taiwanese bootlegs, PCB is yellowish with plated lines.

On the other way I've reopened Tanque Robot and took a picture of PCB, looks original, gold plated.

Them simply didn't worked, black screen with vertical red line at left, and vertical green line at right.

[Sorting out the CV & ADAM Utilities]

I did a small analysis of the Go-No-go ROM, appears that it requires an external hardware connected in the expansion port as it writes to 2000H and 4000H, then it waits for automatic response from Controller Port 2 (no human could do it fast enough). It tests ROM, RAM, audio, video RAM, even some things that probably emulators would not do correctly (like reading A000H and waiting ro read A0H, C000H - C0H and so).

At the end I found a final routine, at 8835H (using BlueMSX, pause emulation, change PC, unpause emulation; for ROM change start address in bytes 800AH / 800BH), then it will play a small music, then puts colour bars in screen and some messages.

This missing external hardware probably has four digits leds and a cable to connect it to Controller Port 2.

I hope this info is useful for everybody.

[Tips for repairing select/reset buttons of Atari 2600 Jr?]

Hi everybody, just after a while I discovered that Select/Reset buttons of my Atari 2600 Jr aren't working, there is an easy way of repairing them?

Thanks in advance.

[My first Atari cartridges]

I've buyed other eight cartridges, four are Taiwanese bootlegs.

o Little Bear.

o River Raid.

o Fantastic Game (32 in 1), not working.

o Tooth Brush, not working.

o Mountain King.

o Dark Chambers (pretty good state)

o Amidar

o Fire Fly (apparently sun borrowed colors)

Tooth Brush and Fantastic Game aren't working. I'm thinking about replacing oxidized screws with new screws. Not able to test further with my non-working Reset/Select buttons.

[My first Atari cartridges]

Using a lot of isopropilic alcohol I've managed to get working the other four cartridges , now I've discovered that the Select/Reset buttons of my Atari doesn't work .

Seesaw looks like Atari Circus, but has man changed to a clown, and Fire Bird is like Demon Attack but with the original logo removed, now I'm pretty sure both are Taiwanese bootlegs, PCB is yellowish with plated lines.

On the other way I've reopened Tanque Robot and took a picture of PCB, looks original, gold plated.

[My first Atari cartridges]

Is that Robot Tank a pirate version?

It appears to be original, as the screws are exposed I've removed them, the PCB is green with mask, white letters and it has a small microchip covered with epoxy.

[My first Atari cartridges]

Added:

http://www.atarimani...bird_27476.html

 

Thanks.

 

Nanochess, is Firebird the same game as MegaMania?

http://www.atarimani...ania_s6884.html

 

 

I've checked it again, it says "FIRE BIRD" in top label, I overlooked the space, no further info available.

The game itself doesn't look like Megamania, it has several blue birds flying in different lines shooting the magenta ship in bottom, when a bird is destroyed it "regenerates" from left and right of screen, when the ship is destroyed it explodes like fireworks.

 

 

Your description of "Fire Bird" sounds like Demon Attack to me.

 

Yes, it looks like Demon Attack but I don't remember to see the logo, I will check it again later.

[Cos, Sin and Atan2]

The bullet doesn't need to stop.

 

With the Bresenham method, remove the end of loop condition test and just keep doing the other parts, use edge of screen or collision or whatever as the stop condition.

 

So in effect you don't need the loop (or simulated loop) at all.

 

What's important is that you're just using the DeltaX/DeltaY method where you add that calculated gradient and do the compare as a condition each time as to whether the minor slope changes.

That's a pretty good idea

[My first Atari cartridges]

Added:

http://www.atarimania.com/game-atari-2600-vcs-firebird_27476.html

 

Thanks.

 

Nanochess, is Firebird the same game as MegaMania?

http://www.atarimania.com/game-megamania_s6884.html

 

 

I've checked it again, it says "FIRE BIRD" in top label, I overlooked the space, no further info available.

The game itself doesn't look like Megamania, it has several blue birds flying in different lines shooting the magenta ship in bottom, when a bird is destroyed it "regenerates" from left and right of screen, when the ship is destroyed it explodes like fireworks.

 

Welcome to the forums! Looks like you have an ok start. Now to get out there and start building up your collection. Those bad carts will eventually get replaced with better ones naturally as you collect. Where's a pic of your console?

 

And the picture of my Atari, I buyed it for US$3, no joysticks/cables/power supply, it was brown of dust, I've cleaned it though still some dust in wrinkles, you can see my modification with the RCA Jacks for video/audio, I didn't make any holes in case.

The case has a crack underneath from center to top, someone sit over it , fortunately the PCB is all right and pretty clean .

[My first Atari cartridges]

Hi everybody, I now had an Atari 2600 Jr, I've made the composite video adaptation and finally I've buyed my first Atari cartridges at a flea market, I've got:

• Tanque Robot (not working, missing half top label)
  
• Seesaw (not working, slightly smaller)
  
• Firebird
  
• Keystone Kapers (not working)
  
• Taz
  
• Real Football
  
• Yars Revenge
  
• Sky Jinks (not working)
  

At the Atariage's database doesn't appear sticker info of Tanque Robot, Seesaw or Firebird, so find annex a big photo, and a small photo of each others.

[Gorf Technical Question]

One of my favorite games is Gorf..but one thing about it really bothers me.

 

Why only one shot at a time? And...if you shoot again before the bullet hits something, it disappears. Other games let you shoot one bullet at a time, but you cannot shoot another one until the first bullet either hits something or leaves the screen. Even Missile Command on the 2600 lets you shoot three shots at a time.

 

More times on this game, I line up a shot, then shoot, and then shoot again at something closer, and the first shot disappears from the screen without hitting anything.

 

Any technical reason why? Programmers choice? Lack of memory or whatnot?

 

Technically is easier to simply reinit on trigger bullet vars in memory, maybe the programmer was still learning.

[How many Colecovision were sold?]

I will take as good the 6 million number, thanks for the info.

 

Per Youki answer there would be only four Colecovision

[How many Colecovision were sold?]

Hi everybody, this is my first topic post.

 

Wikipedia says that Colecovision sold two million units, while colecovision.dk says it sold six million units, what is the correct number? Just for my records.

 

Thanks in advance

[ColecoVision A.E. - Unreleased]

I like the backgrounds, the artist obviously took his time.

[Question about translated Atari games labels]

Thanks a lot!, I also saw Supercocinero. I'm sure there will be another opportunity, Atari was very popular here.

 

Oink!

 

http://www.atarimania.com/game-atari-2600-vcs-3-cochinitos-los_19672.html

 

Atari Mexico.

 

If you're interested in collecting these series, it could be valuable:

http://www.atarimania.com/list_games_atari-2600-vcs-atari-cartucho-original_publisher_2531_2_G.html

 

[Question about translated Atari games labels]

Hi, I live in Mexico and recently in a flea market I saw an Atari Cartridge labeled "Los Tres Cochinitos", it showed a drawing of three pigs, unfortunately I turned around a moment and the next it has been sold to another person by USD$2. Would it have some value for collectors? What would be its original name? Thanks in advance.