Difference between revisions of "Atari 2600"

From TechWiki
Jump to navigation Jump to search
(Electrolytic Capacitors)
(Polyester Film Capacitors)
 
(6 intermediate revisions by the same user not shown)
Line 32: Line 32:
  
 
== Capacitor Info & Refresh Kit Installation ==
 
== Capacitor Info & Refresh Kit Installation ==
[https://console5.com/store/atari-2600-total-refresh-kit-new-capacitors.html "Total Refresh" kits available here]
+
[https://console5.com/store/atari-2600-total-refresh-tune-up-cap-kit-new-capacitors-and-more.html "Total Refresh" kits featuring new caps, DC jacks, and other service parts available here]
 
=== Electrolytic Capacitors ===
 
=== Electrolytic Capacitors ===
==== Early Revs ====
+
==== 2600 All Revs====
 +
<pre>
 +
C105 4.7uF 35v
 +
C106 2200uF 16v
 +
C201 4.7uF 35v
 +
</pre>
 +
 
 +
 
 +
==== 2600A All Revs ====
 
<pre>C201 4.7uF 35v
 
<pre>C201 4.7uF 35v
 
C214 4.7uF 35v
 
C214 4.7uF 35v
 
C243 2200uF 16v</pre>
 
C243 2200uF 16v</pre>
 +
  
 
==== NTSC Junior ====
 
==== NTSC Junior ====
<pre>C20 4.7uF 35v
+
<pre>
 +
C20 4.7uF 35v
 
C26 2200uF 16v
 
C26 2200uF 16v
 
C27 4.7uF 35v
 
C27 4.7uF 35v
 
C29 4.7uF 35v
 
C29 4.7uF 35v
C37 4.7uF 35v</pre>
+
C37 4.7uF 35v
 +
</pre>
  
 
=== Styrene Capacitors ===
 
=== Styrene Capacitors ===
Line 58: Line 69:
  
  
=== Polyester Film Capacitors ===
+
=== Polyester Film Power Supply Capacitors ===
Atari field change order 1A notes factory-installed underrated caps in these locations causing video quality issues.  Covered again in Service Bulletin Febuary 17, 1982.  Near voltage regulator.  Non-polarized.
+
Atari field Change Order 1A notes factory-installed underrated caps in these locations causing video quality issues.  Covered again in Service Bulletin Febuary 17, 1982.  Near voltage regulator.  Non-polarized. Service manual specifies 0.22uF replacement (included in our refresh kits)
<pre>C241 .1uF 100v
+
<pre>2600
C242 .1uF 100v</pre>
+
C103 .1uF 100v (or 25v in very old models)
  
 +
2600A
 +
C241 .1uF 100v
 +
C242 .1uF 100v
 +
</pre>
  
=== Other Parts included with the Refresh Kit ===
+
=== Other Parts included with various refresh kits ===
 
;820 Ohm Resistor - Blanking resistor - (Tech Tip 4, 11/17/82)
 
;820 Ohm Resistor - Blanking resistor - (Tech Tip 4, 11/17/82)
 
:Improves color. Incorporated on Rev 16 PCBs and above.  Earlier PCBs should have an 820 Ohm resistor added to the solder side between pin 6 and pin 9 of A201 ([[TIA]]).
 
:Improves color. Incorporated on Rev 16 PCBs and above.  Earlier PCBs should have an 820 Ohm resistor added to the solder side between pin 6 and pin 9 of A201 ([[TIA]]).

Latest revision as of 11:36, 13 July 2019

Chip Info

Original Revision

  • +5V Regulator: 7805
  • A200: MPU: CO10745 (6507, a variant of the 6502)
  • A201: TIA: CO10444 (Television Interface Adapter)
  • A202: RIOT: CO10750 (6532)
  • A203: 4050B: Video & Joystick Button (trigger) buffer


R14 - R16

  • A200: MPU: CO10745 (6507, a variant of the 6502)
  • A201: TIA: CO10444 (Television Interface Adapter)
  • A202: RIOT: CO10750 (6532)
  • A203: +5V Regulator: 7805
  • A205: 555


Schematics

From the service manual:


Service Manual


Capacitor Info & Refresh Kit Installation

"Total Refresh" kits featuring new caps, DC jacks, and other service parts available here

Electrolytic Capacitors

2600 All Revs

C105	4.7uF	35v
C106	2200uF	16v
C201	4.7uF	35v


2600A All Revs

C201	4.7uF	35v
C214	4.7uF	35v
C243	2200uF	16v


NTSC Junior

C20	4.7uF	35v
C26	2200uF	16v
C27	4.7uF	35v
C29	4.7uF	35v
C37	4.7uF	35v

Styrene Capacitors

These two silver-colored styrene capacitors are next in line for failure, causing a loss of audio. Discussed in Tech Tip #2 in the service manual. These caps are non-polarized.

Early PCBs
C206	820pf	50v
C207	820pf	50v

Junior
C53	820pf	50v
C54	820pf	50v


Polyester Film Power Supply Capacitors

Atari field Change Order 1A notes factory-installed underrated caps in these locations causing video quality issues. Covered again in Service Bulletin Febuary 17, 1982. Near voltage regulator. Non-polarized. Service manual specifies 0.22uF replacement (included in our refresh kits)

2600
C103	 .1uF	100v (or 25v in very old models)

2600A
C241	.1uF	100v
C242	.1uF	100v

Other Parts included with various refresh kits

820 Ohm Resistor - Blanking resistor - (Tech Tip 4, 11/17/82)
Improves color. Incorporated on Rev 16 PCBs and above. Earlier PCBs should have an 820 Ohm resistor added to the solder side between pin 6 and pin 9 of A201 (TIA).
Zener Diode & 1uF axial capacitors for static protection (SB Feburay 18, 1982)
Solder yellow 1uF cap in parallel with Zener diodes & trim capacitor leads. The marked end of the diode connects to joystick connector J202 & J203 pin 6 (button) and other end to closest ground plane.
To quickly determine pin 6, continuity check between A203 pin 7 or pin 9 to each joystick port
If A203 not present, each pin 6 is connected to one side of either C216 and C217
7805 Voltage Regulator
Stock units were rated close to needed current and frequently fail.
Stainless screw & net
Some 7805 regulators are riveted to an external heatsink. This screw / nut combo replaces the rivet.
DC Jack
Frequently fail or become loose, dirty, damaged, etc. Sometimes the slightest tap will cause a reset.