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My non-working TI-99/4A


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#1 nanochess ONLINE  

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Posted Sun Apr 1, 2018 2:31 PM

Hi everyone.

 

After years of wanting a TI-99/4A, finally bite the bullet and got one from eBay.

 

The pictures looked great and the seller stated clearly that it worked, so I bought it, I typically use a carrier service to bring things from USA to Mexico, so I cannot return anything. Anyway the vendor reputation was high enough.

 

Unfortunately after receiving it and unpacking it anxiously I discovered it wouldn't show anything in my TV.

 

I thought the RF box was failing, so I went to test directly from the connector using a RCA jack, and to not avail, so I opened it and everything looks fine but there isn't any video synchro in the VDP.

 

Still the VDP isn't discarded as I need to check the oscillator and other few things.

 

But anyway, here are some pictures.

 

I've ordered also a FinalGROM99 for loading cartridge images :) it should come anyday.

 

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#2 Asmusr OFFLINE  

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Posted Sun Apr 1, 2018 3:00 PM

It's great that you have taken an interest in the TI. Perhaps we will see some of your marvelous games like Princess Quest or Mecha-8 converted?

 

Sorry that your TI is broken, but I'm sure that the hardware people here can help you fix it in no time.  :)



#3 nanochess ONLINE  

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Posted Sun Apr 1, 2018 9:21 PM

It's great that you have taken an interest in the TI. Perhaps we will see some of your marvelous games like Princess Quest or Mecha-8 converted?


It would be great if I can find the time :)

Sorry that your TI is broken, but I'm sure that the hardware people here can help you fix it in no time.  :)


Myself I've been checking it today, made it to oscillate and got a tone in sound chip.

It looks like the VDP is fried, I've already ordered a replacement chip.

#4 nanochess ONLINE  

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Posted Fri Apr 13, 2018 8:31 PM

Amazing news! :)

broettger generously sent me a working TI-99/4A as a gift with condition of putting sound in Borzork ;) don't worry I'll do it

He sent me also joysticks (cool! because that's another feature requested) plus some cartridges, so I'm in TI99 heaven :lust:

So thanks a lot!

BTW, my FinalGROM99 came and I could test myself Borzork and Astro Cube. :)

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#5 Opry99er OFFLINE  

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Posted Fri Apr 13, 2018 10:41 PM

Amazing!!!

So glad to see you enjoying your computer!!

#6 Opry99er OFFLINE  

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Posted Fri Apr 13, 2018 10:42 PM

Looks like you need a speech synthesizer too, eh?

That can be arranged. :D

#7 nanochess ONLINE  

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Posted Sat Apr 14, 2018 7:14 AM

Looks like you need a speech synthesizer too, eh?

That can be arranged. :D


That would be sooo coool :lust:

#8 broettger OFFLINE  

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Posted Sat Apr 14, 2018 2:23 PM

I am glad to see that you are putting it to use already.  :D



#9 Opry99er OFFLINE  

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Posted Sat Apr 14, 2018 4:19 PM

That would be sooo coool :lust:


PM sent




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