Cleopatra (Gottlieb, 1977): Troubleshooting and System 1 Replacement Boards
Your Cleopatra by Gottlieb shows "Game Over" at startup, has inoperative door buttons, stubborn displays, or a temperamental startup? These symptoms are typical of Gottlieb System 1 pinball machines whose original boards are now over 40 years old. The good news: our battery-free replacement boards, Plug & Play, bring your machine back to life.
Cleopatra (Gottlieb, 1977): Overview
Released in 1977, Cleopatra is Gottlieb's first solid-state machine and the debut of System 1, themed on ancient Egypt and Queen Cleopatra, with alphanumeric displays. It uses the Gottlieb System 1 electronics.
- Manufacturer: Gottlieb
- Year: 1977
- Electronic system: Gottlieb System 1
- Type: solid state
- Theme: ancient Egypt / Queen Cleopatra
Common Issues (System 1)
The Gottlieb System 1 shares a well-known set of weaknesses regardless of the game:
- Leaking battery: the NiCad battery soldered to the MPU board corrodes traces and components over time. This is the #1 failure — remove it immediately.
- Poor grounds: the original ground wiring is undersized and causes resets and erratic behavior (ground mods are virtually mandatory).
- Corroded connectors: Molex connectors, especially the 46-pin MPU-to-driver connection, lose contact and require re-pinning.
- Power supply: unstable 5V (often the legs of transistor Q1 or the R4 trim pot), tired rectifier bridges, and overheating transformers cause crashes.
- Displays: digits that fade, flicker, or freeze at zero. Never connect or disconnect a display while powered on.
Cleopatra-Specific Issues (Forum Reports)
- "Game Over" at startup: a game-over relay that won't engage is a classic Cleopatra System 1 fault, often due to a poor contact or a fault in the boot sequence.
- Inoperative door buttons: credit-add, start, and test buttons have no effect, frequently after a component replacement or because of a faulty connector.
- Stubborn displays: dead or unreadable segments, typical of System 1 electronics.
- Temperamental startup sequence: the very tight tolerances of the reset stage make the boot sensitive to the slightest voltage drop.
- Battery-related corrosion: damage around the old battery in the MPU area, to be inspected as a priority.
Compatible Replacement Boards for Cleopatra
Cleopatra runs on the Gottlieb System 1, a platform known for its fragility (leaking battery, weak grounds, corroded connectors). Pinballs Store offers battery-free replacement solutions:
- Gosof — replacement sound board.
For a dedicated System 1 CPU/driver board, contact us: we'll point you to the best solution for your Cleopatra. Plug & Play installation, battery-free, with free support.
FAQ — Cleopatra Gottlieb
My Cleopatra shows "Game Over" at startup.
A game-over relay that won't engage — a classic System 1 fault. Check the relay contact and the boot sequence; a modern battery-free CPU stabilizes startup — contact us.
My door buttons don't respond.
Credit, start, and test buttons often fail after a component swap or due to a faulty connector. Re-pin the connectors and check the switch wiring.
Do you have a replacement CPU board for my System 1?
Contact us — we'll point you to the best battery-free solution for your machine. The Gosof already covers the sound board.
Do I need to keep the original battery?
No. The NiCad battery is the #1 cause of corrosion on System 1 — remove it. Modern replacements are battery-free.
How long does installation take?
Our replacement boards are Plug & Play: just a few minutes, no soldering required, with tutorials and free support.
Does a battery-free board retain settings and high scores?
Yes. Modern replacement boards use NVRAM: no battery, no corrosion, and settings are preserved when powered off.
Step-by-Step Diagnostics
- With power off, visual inspection: look for battery leakage or corrosion on the MPU of your Cleopatra; remove the NiCad battery immediately if still present.
- Power supply: measure the 5V rail; if low, re-solder the legs of transistor Q1 and check the R4 trim pot.
- Grounds: apply the System 1 ground mods (ground wires to the CPU and driver boards).
- Connectors: re-pin the oxidized 46-pin MPU-to-driver Molex connector and the connectors under the battery.
- Displays: never connect or disconnect a display while powered on (it can destroy the display driver chips); test with a known good display.
- Final test: verify startup, credits, solenoids, and displays; if needed, contact free support.
Useful Guides
- How much does pinball machine repair cost? A price guide
- How much is my pinball machine worth? Value and estimation
- Pinball machine leg sizes: the complete guide
- Which board for a Gottlieb System 80, 80A or 80B?
See Also
- Sinbad (Gottlieb, 1978)
- Joker Poker (Gottlieb, 1978)
- Dragon (Gottlieb, 1978)
- Solar Ride (Gottlieb, 1979)
