Make this my favourite Atari delay line CO60472 replacement - DYI soldering kit

Category:
Retro Computers >> Atari
Listing type:
Fixed Price Multiple Items
Item Condition:
New
Seller location:
Purmerend, Netherlands
Ending in:
1 days, 16h:53m:25s
Quantity Available
3
Latest buyer:
n***3 (1)
Fixed price:
€8.00 Buy now!
21.00% VAT, Duty and handling fees may be payable on Price & Shipping on receipt
Shipping Costs:
From only €2.00 or buyer collect
Payment methods:
Paypal, Bank transfer
Number Sold:
4 (View history)
Buyer Value Date and hour Quantity bought
n***3 (1) €8.00 05/02/2021  19:48:11 1
c***8 (3) €8.00 30/01/2021  19:22:21 1
y***e (2) €16.00 01/01/2021  16:43:10 2
Feedback on this Item
PositivePositive n***3 (1) Funziona molto bene ! https://twitter.com/nicola_avanzi/status/1361380733491818504?s=19
Seller's Response
Grazie per il feedback!
15/02/2021  18:55:45

Item Number : 47530

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dmantione (22) User Offline

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Fixed price: €8.00
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Description

This is a replacement for the CO60472 delay line used in Atari 8-bit computers. The CO60472 is used for generating the RAS, MUX and CAS signals for the DRAM memory. This part is a re-implemenation of the CO60472 based on a 74HC14 inverter and resistor/capacitor combinations to implement the delay. It is a drop-in replacement for the CO60472.

Required soldering experience: Easy
Expected time to build:
(assuming some previous experience)
+/- 15 minutes

 

This part is compatible with the following computers:

  • Atari 600XL
  • Atari 800XL

 

A broken CO60472 is a common defect in these computers and will cause a black screen.

The original CO60472 is an EP8212 by PCA Electronics. This replacement is not an exact clone the EP8212: The delays depend on the clock frequency and the resistor values have been tuned to the clock frequency used in the Atari computers. It might be possible to replace the EP8212 in different circuits by using different resistor values.

The idea for this part comes from the Atari community, but I did redesign the electronic schematic in order to get closer to the original CO60472 timing.

In order to keep the size of the adaper reasonable, some SMD components have been used, but it is not the worst of SMD, the kit is still very easy to solder with a normal soldering iron.

You will receive:

  • Adapter PCB
  • 74HC14 integrated circuit
  • 3 * 150pF ceramic capacitor
  • 120 ohm resistor
  • 270 ohm resistor
  • 820 ohm resistor
  • instruction manual

 

Picture gallery

  • Atari delay line CO60472 replacement - DYI soldering kit
  • Atari delay line CO60472 replacement - DYI soldering kit
  • Atari delay line CO60472 replacement - DYI soldering kit
  • Atari delay line CO60472 replacement - DYI soldering kit

Questions and Answers

Shipping and Payment

Item Location:
Purmerend, Netherlands
Shipping conditions:
Buyer pays shipping expenses
Shipment fee:
  • To Netherlands :
  • First Class Post : €2.00
  • Collection in Person : FREE
  • To Americas (Non USA) :
  • Airmail Post : €5.00
  • Intl Signed For : €18.00
  • To Rest of World :
  • Airmail Post : €5.00
  • Intl Signed For : €18.00
  • To USA :
  • Airmail Post : €5.00
  • Intl Signed For : €18.00
  • To EU :
  • Intl Signed For : €12.50
  • Surface Mail : €3.00
  • To Europe (Non EU) :
  • Intl Signed For : €18.00
  • Surface Mail : €3.00
Shipment terms:
Not specified
Payment methods:
Paypal, Bank transfer

The seller accepts all responsibility for this listing

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