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NLG Users Repair Logs and Other Ramblings. Request your very own topic. Just ask any site staff. => Channelmaniac's Arcadecomponents' Old School Repair Logs => Topic started by: channelmaniac on May 04, 2014, 06:58:38 PM

Title: Romstar Games
Post by: channelmaniac on May 04, 2014, 06:58:38 PM

Model: Sky Soldiers
Symptom: Corrupt Graphics

Background graphics and enemy ships were displayed with black dots that looked like a 'waffle' pattern. Replaced bad SRAM IC at L6. Tested.

Title: Re: Romstar Games
Post by: channelmaniac on May 04, 2014, 06:58:52 PM

Model: Twin Cobra
Symptom: Missing graphic elements

Elements would reappear if the board was flexed or tapped.

Replaced bad socket on the PROM at location A25. Resoldered 7 bad solder joints. Cleaned legs on one EPROM. Tested.

Title: Re: Romstar Games
Post by: channelmaniac on July 04, 2016, 11:45:56 AM

Model: Sky Shark
Symptom: Flickering graphics

Replaced 2 physically damaged 2148/2149 RAMs and tested.

Title: Re: Romstar Games
Post by: channelmaniac on August 19, 2021, 10:27:13 PM

Model: Twin Cobra
Symptom: Doubled up screen

Repaired a gouged trace in the video memory circuits. Tested.