JAMMArcade.net – Page 118

Atari Lynx LCD screen

Feb 062016

I’ve been doing a lot more gaming than anything else recently so thought I’d do a little post on this.
My hardware of choice right now is the Atari Lynx. The only thing that lets the Lynx down for me was the screen. Anyway A guy known as McWill found on the AtariAge forums makes an LCD replacement so I took the plunge and ordered one.

Installation was a little time consuming but definitely not difficult. I found the hardest part was dealing with the Lynx unit itself, it gets a little awkward reattaching the flex cable.
For some reason I never took a picture of the replacement itself so ill just show the before and after screenshots.

BEFORE:
20160206_100625
AFTER:
20160206_121525

Im very impressed with this thing. Pressing the backlight button will switch on/off scan lines too which is a nice touch.
Ill definately be getting a lot more use out of my Lynx now.

Thanks to McWill for this. Delivery took just a few days (from Germany to UK) and was very well packed.
Game Gear is next on my list when funds permit.

Heavy Unit repair log #2

Feb 062016

Got this pcb to be repaired from a friend.

The pcb was working perfect excepts that the screen was flickering at 1/2 of the vsync.

As usual I visually inspected the board to find loose legs on smd chips but the only one present was good.

I noticed that the pcb had 4x rams 4164 near the video custom chip which are known to be not very reliable.

I started to probe the rams until I found one which had all the signals very weaks.

After soldering a new one, the problem was fixed!

Heavy Unit

E-Swat 317-0129 tested

Decrypted Updates Comments Off

Feb 042016

dj_yt has tested the above decrypted version of E-Swat and all is well.
Thanks to dj_yt for testing and reporting back.

Untested PAL dumps update

PAL Updates 1 Response »

Feb 022016

In the past days we received some new PAL dumps. For now we mark them as untested since we yet have no feedback on them.Most of dumps came from ‘coolmod’.He sent in dumps from a Gaiapolis PCB (two boards PCB revision), this is the only which has been tested and working in a GAL16V8.Then, he submitted dumps from various boards :

Golden Tee 3D Golf
Karate Tournament
Hat Trick Hero ’93

These are untested for now (the ones from Hat Trick Hero ’93 are still in native PAL16L8 format) as well as the dumps we got from Smitdogg on Dumping Union from a laser disk game called Mahjong #4 Shabon-Dama.Thanks to the dumpers for their contribution.

Super World Court repair log

PCB Repair Logs, Repair Logs Comments Off

Jan 312016

Another pcb which was part of the cheap deal.

It was completely dead. Given that it is not an interesting game I was about to use it for spare parts when I asked my friend Caius if he ever repaired a Namco NA-1

He told me he once repaired one with a capacitor connected to the reset circuit of the 68000 which faulty and didn’t produce the reset signal.

I tested mine and to my surprise the reset was stuck low.

I changed the capacitor smd 22uF @C5 with one 1uF which I had available and the game booted.

Unfortunately the sound was completely missing, so I probed with my portable amplifier some smd capacitors which are know to be leaking very easily and I found one which interrupted the sound to the main ampli.

After changing it, the sound was very low with lot of background noise.

To end a long story short, I recapped many small smd caps with new ones and restored full volume.

This is a common problem with Namco NA-1 pcbs

Foto 30-01-16 21 58 07

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