Long story short, I have an Atari ROTJ popping the fuse at F4 and F5 on the power brick. It also is sparking at J6 on the ARII-02.
Any ideas?
Any ideas?
-
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ARII popping Fuse and J6
- Thread starter HighScoreSaves
- Start date
Dokert
Well-known member
Damn! Without looking at the scat, I would say... Pull the power brick and test the BR underneath to see if it is blown.
OP
OP
I am unsure how to test.
I did order a ARII rebuild, bridge and big blue from Bob.
I was leaning towards the bridge since I had another game that was similar a long time ago.
I did order a ARII rebuild, bridge and big blue from Bob.
I was leaning towards the bridge since I had another game that was similar a long time ago.
Dokert
Well-known member
Pull the power brick and flip it over.
The BR looks something like this...
.....+.........AC
...................
...................
...................
AC..............-
Set meter to diode test
Red lead to -
Black lead to each AC
Black lead to +
Red lead to each AC
All should read .400 - .600
report what you get
This is done with NO POWER
The BR looks something like this...
.....+.........AC
...................
...................
...................
AC..............-
Set meter to diode test
Red lead to -
Black lead to each AC
Black lead to +
Red lead to each AC
All should read .400 - .600
report what you get
This is done with NO POWER
OP
OP
On the >l setting-----
Red to -
AC1 -430to460
AC2 -440-470
Black to +
AC1 -445to480
AC@ - 430-450
Dokert
Well-known member
Bridge is good
Test the bridge on the A/RII at CR6-CR8 (right hand side of the board)
It is a little different as you are testing individual diodes. One direction should read .400 - .600 and the other direction should read way high IIRC.
OP
OP
CR5-CR8 are reading around 550 each.
Dokert
Well-known member
post pics of the power brick top and bottom, it sounds like something is mis-wired.
OP
OP
Dokert
Well-known member
check and see which wire is actually on the + of the BR, I can't tell from the pic
OP
OP
The Orange/Black is going from the + on the BR to the Cap.
The Purple/White is going from the - on the BR to the Cap.
The Purple/White is going from the - on the BR to the Cap.
OP
OP
On other Atari Bricks I've seen, there has been 5 fuses. There is a spot for one, however, looks like it was never wired that way.
I get this information from the Centipede I just worked on recently.
I get this information from the Centipede I just worked on recently.
Dokert
Well-known member
The 15 pin connector on the power brick is J5 and it numbers as follows...
^ ^ ^
1 2 3
4 5 6
7 8 9
etc
Time to test it under power
meter set to 20vdc
Black lead to pin 4 or 5
Red lead to pin 1, 2, 3
meter set to 200vac
Red lead to pin 6
Black lead to pin 7
meter set to 20vac
Red lead to pin 8
Black lead to pin 9
post results
^ ^ ^
1 2 3
4 5 6
7 8 9
etc
Time to test it under power
meter set to 20vdc
Black lead to pin 4 or 5
Red lead to pin 1, 2, 3
meter set to 200vac
Red lead to pin 6
Black lead to pin 7
meter set to 20vac
Red lead to pin 8
Black lead to pin 9
post results
OP
OP
Thanks! I am going to have to call it a nite though.
I will get back with the information ASAP tomorrow nite.
Thanks for everything. Just want to see this game in action!
I will get back with the information ASAP tomorrow nite.
Thanks for everything. Just want to see this game in action!
OP
OP
Pin1 -1.39
Pin2 -1.39
Pin3 -1.39
Red Pin6 to Black Pin7 = 0
Red Pin8 to Black/Pin9 = 5.7 on 200vac (my meter doesn't have 20)
Dokert
Well-known member
check your fuses, but it looks like your power brick is for shit.
OP
OP
Is that the tech term of the day?
Well, we tried. Looks like I need to pick up another.
Thank you very much for your help.
Well, we tried. Looks like I need to pick up another.
Thank you very much for your help.
Dokert
Well-known member
Could be an internally shorted big blue, but that wouldn't account for no voltage on pin 6 & pin 7. I am thinking that your trans is bad.
OP
OP
Does the fact that it only has 4 of the 5 fuses populated (and wired) lean your decision towards this? Is it worth the time to try the rebuild of the Cap and Bridge?
Dokert
Well-known member
Not really, most of the Atari power bricks have only 4 of 5 fuses populated.
I would reflow the transformer lugs with new solder, and test to see what is coming out of the transformer lugs.
I would reflow the transformer lugs with new solder, and test to see what is coming out of the transformer lugs.
