# '503' replacement

Replacement of the '503' custom IC used on Konami arcade PCBs

- **Seller:** [Caius Arcade ](https://www.lectronz.com/stores/caiusarcade), Vietri sul Mare (Salerno), Campania, Italy
- **Price:** €34.35 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Gaming, Retrocomputing
- **Product page:** https://www.lectronz.com/products/-503-replacement

## Images

!['503' replacement](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzAzNDYsInB1ciI6ImJsb2JfaWQifX0=--c97f30cc683768b7b7c05e0d3790c3030acfaa43/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/Konami_503_CPLD.jpg)

## Description

#### What is it?

This is a pre-assembled board meant to be used as a replacement for faulty '503' custom ICs used on some Konami arcade PCBs from 80s like:

-     Pooyan
-     Track & Field/hyper Olympic
-     Shao-Lin's Road/Kicker
-     Pandora's Palace
-     Roc'n Rope
-     Time Pilot
-     Time Pilot '84
-     Yie Ar Kung-Fu
-     Gyruss

#### Why did you make it?

I did it because the original part breaks very easily, making expensive and valuable arcade PCBs useless.

The replacement has exactly the same functionality of the original part which is known to be prone to failure.It's the only replacement available so far, nobody else made it.
#### What makes it special?

## Shipping policy

Shipping is tracked, you receive the tracking number.

- No insurance.

- Item ships within 7 business days.

- Delivery is usually done within 7-15 business days.