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| | |-+  Ramtek M-79 Ambush 		0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Ramtek M-79 Ambush  (Read 12622 times)
stutrac
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« on: January 29, 2009, 02:37:26 PM »
who does board repair?? i know this is a long shot, recapted power supply had bad cap's and still garbage on screen and a high pitch sound
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channelmaniac
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« Reply #1 on: January 29, 2009, 02:42:42 PM »
That's going to be a tough one.

I do board repairs on boards I can hook up on my test bench and that one is one that won't be easy to do that for.

A location would help - where are you?
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I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com
stutrac
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« Reply #2 on: January 29, 2009, 02:45:33 PM »
i am in CT,  game board

* ram2.jpg (821.21 KB, 2304x1728 - viewed 318 times.)
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stutrac
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« Reply #3 on: January 29, 2009, 02:47:27 PM »
power supply

* ram.jpg (762.9 KB, 1840x1228 - viewed 321 times.)
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dormi
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« Reply #4 on: January 29, 2009, 03:34:59 PM »
Fifteen empty sockets on board.  Missing EPROMS?
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stutrac
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« Reply #5 on: January 29, 2009, 03:40:32 PM »
i do not know how many Scratch Head  there supposed to be in there ,that is what i thought some were missing,  i do not know  how many the game requires?? Scratch Head
« Last Edit: January 29, 2009, 04:30:33 PM by stutrac » Logged
li_gangyi
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« Reply #6 on: March 15, 2009, 02:50:24 AM »
All the PROM sockets should be populated.

The operators manual can be found here

http://www.mamext.net/manuali/m79amb.pdf

It might be possible to download the MAME romset, read the ones you have and compare if they are the same, if they are, program the other locations and try it out. From the picture it looks like you have 10T, 9T, 8T, and 7T, you need the 1-10U and 1-6T to fill them up.

It is possible something else is broken, and someone pulled the PROM chips to fix another board, but without populating the PROMs 1st, it'll be pretty difficult to test the rest of the board.
« Last Edit: March 15, 2009, 02:56:04 AM by li_gangyi » Logged
StatFreak
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« Reply #7 on: March 15, 2009, 09:25:32 AM »
Welcome to NLG li_gangyi.  wave

Thanks for posting that link, and K+ to you. applause
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I found myself at NLG garfield  ..but got lost again on the way home. Scratch Head 2
If found, please email me to myself. Thanks. yes
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li_gangyi
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« Reply #8 on: March 15, 2009, 09:39:49 AM »
Hi, I've been a lurker here for quite awhile... but yeah.

No idea what K+ means though
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StatFreak
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« Reply #9 on: March 15, 2009, 09:43:22 AM »
Quote from: li_gangyi on March 15, 2009, 09:39:49 AM
Hi, I've been a lurker here for quite awhile... but yeah.

No idea what K+ means though

I gave you a positive Karma for helping stutrac with his issue.
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I found myself at NLG garfield  ..but got lost again on the way home. Scratch Head 2
If found, please email me to myself. Thanks. yes
       Executive member in good standing of Rick's SMAA.                              Ehhh...What's Up Doc?
li_gangyi
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« Reply #10 on: March 15, 2009, 09:44:19 AM »
Ahh lol, yeah I just saw that.
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dormi
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« Reply #11 on: March 16, 2009, 07:44:35 PM »
You might try Eldorado Games Ltd. they do board repair on older video games.

http://www.eldoradogames.com/
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stutrac
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« Reply #12 on: March 16, 2009, 07:48:42 PM »
Eldorado will not do board work on this game  hissy fit
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li_gangyi
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« Reply #13 on: March 16, 2009, 10:07:06 PM »
Go locate some EEPROMs, I have a programmer and can program them for you for nothing, you'd have to pay for shipping to Singapore though, that should be cheap...

Or find someone local who can do that.
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jay
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if you cant afford to lose you cant afford to win
« Reply #14 on: March 17, 2009, 01:00:15 AM »
Li_Gangyi welcome to the forum.....

Is Lucky Plaza on Orchard still standing ?
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The only way to beat the casino is to own it
li_gangyi
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« Reply #15 on: March 17, 2009, 01:15:14 AM »
jay : yeah it is, you've been here before?
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jay
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if you cant afford to lose you cant afford to win
« Reply #16 on: March 17, 2009, 01:07:15 PM »
My company had a office in the IBM towers building, so I had spent a fair bit of time there.
Bo Quay, Little India, Jumbo Seafood by the ocean.... typically the quality of a business trip is measured by the quality of the restaurants.
I never have had Chillie Crab anywhere else in the world that has been that good.
Anything I could possibly need I found on the 4th floor of Sim Lim Square....
Sungie road was always fun at night.
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The only way to beat the casino is to own it
li_gangyi
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« Reply #17 on: March 17, 2009, 01:13:16 PM »
IBM towers at 80 anson road??
That's now known as the Fuji-Xerox towers, you must've been here quite awhile back.

Yeah I love chilli crab too, surprised you can handle the heat. Sim Lim Tower and Square here = electronics heaven, pretty much most of the stuff I need to buy to fix anything can be bought there.

Let's get back on the thread lol, too much OT.
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StatFreak
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« Reply #18 on: March 17, 2009, 05:40:48 PM »
You guys have me wishing I could come to Singapore to try the chili crab. I love spicy foods! yummy
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I found myself at NLG garfield  ..but got lost again on the way home. Scratch Head 2
If found, please email me to myself. Thanks. yes
       Executive member in good standing of Rick's SMAA.                              Ehhh...What's Up Doc?
jay
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if you cant afford to lose you cant afford to win
« Reply #19 on: March 17, 2009, 05:50:01 PM »
80 Anson Road, and I used to call the Stanford tower home.
It has been a while. That used to be the worlds tallest hotel.
They had a sky bar at the top.
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The only way to beat the casino is to own it
StatFreak
rotaredoM etiS GLN labolG
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« Reply #20 on: March 17, 2009, 06:46:27 PM »
Quote from: jay on March 17, 2009, 05:50:01 PM
80 Anson Road, and I used to call the Stanford tower home.
It has been a while. That used to be the worlds tallest hotel.
They had a sky bar at the top.

Ahh, the old homestead... or at least in the neighborhood. arrow  It looks like google might be off by a building or two.. perhaps the larger-looking ones to the East-North-East?
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I found myself at NLG garfield  ..but got lost again on the way home. Scratch Head 2
If found, please email me to myself. Thanks. yes
       Executive member in good standing of Rick's SMAA.                              Ehhh...What's Up Doc?
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