traindriver69 Posted March 28, 2019 Share Posted March 28, 2019 Hi all Just received a TI99/4A and after plugging it in get this on the screen. And this anyone any ideas please. many thanks Quote Link to comment Share on other sites More sharing options...
+adamantyr Posted March 28, 2019 Share Posted March 28, 2019 If you press 1 and 1 to get into BASIC, is the text legible there? Can you even get into BASIC? Quote Link to comment Share on other sites More sharing options...
+FarmerPotato Posted March 28, 2019 Share Posted March 28, 2019 (edited) Hi all Just received a TI99/4A and after plugging it in get this on the screen. picture 1.jpg And this picture 2.jpg anyone any ideas please. many thanks This is what your computer is trying to tell you: @BHTTNF: D@R L@BHHND HRT NHBHT FDR FDRFHNFDRPNJDN TND LHTTDNFR@BDN. HRT D@RX RN@PPDN DDR RPRHNFDNVDRJ BLNVDNFTRDN, TND BNRJDNPNPPHN LHT RPHTZDNRP@RJDN. HRT NHBHT FDR FDVDRJDN BX D@R DTLPJNFDN. D@R RTBBDRNDBJDN RHFHTRDDRDN JDDPDN D@R H@NDR HN D@R PNBJDTR. RDL@XDN TND V@TBHDN D@R BLHNJDNLHFHTR. Seriously, have a look here: http://atariage.com/forums/topic/254749-greasy-cartridge-port/?do=findComment&comment=3553078 One of the 4116 R@Ms has failed. Specific@lly, U102 which is @ll the way over to the left by the joystick pnrt. Replacing it will take some desoldering skills (this is a great way to start with electronics.) Edited March 28, 2019 by FarmerPotato Quote Link to comment Share on other sites More sharing options...
traindriver69 Posted March 28, 2019 Author Share Posted March 28, 2019 This is the basic screen When in basic there are some white lines flashing interference on the screen and you can type the keys but what letter or number although readable does not reflect which key has been pressed. Quote Link to comment Share on other sites More sharing options...
HOME AUTOMATION Posted March 28, 2019 Share Posted March 28, 2019 the 4116 RAM chips are mixing up addressing! replace as needed! Quote Link to comment Share on other sites More sharing options...
+Lee Stewart Posted March 28, 2019 Share Posted March 28, 2019 @traindriver69, if you do attempt to replace the relevant VRAM chip, be very careful not to compromise the integrity of those white vertical strips running across the top and bottom of those chips. They each house one or more bus bars integral to the motherboard’s circuitry! ...lee 2 Quote Link to comment Share on other sites More sharing options...
+Schmitzi Posted March 28, 2019 Share Posted March 28, 2019 Maybe this is one of the very seldom russian consoles ? 2 Quote Link to comment Share on other sites More sharing options...
traindriver69 Posted April 2, 2019 Author Share Posted April 2, 2019 Hi all I have got hold of some dram chips and dip sockets and have unsoldered the first chip by the joystick socket but like an idiot I forgot to take a picture to see which points need soldering to where.Has anyone got or able to send me a picture with a close up of the back of the board at that point so I can double check what needs soldering to where. Many Thanks Quote Link to comment Share on other sites More sharing options...
Flottmann1 Posted April 2, 2019 Share Posted April 2, 2019 here Pictures from a EU (german) TI-99/4A Board 1 Quote Link to comment Share on other sites More sharing options...
traindriver69 Posted April 2, 2019 Author Share Posted April 2, 2019 Hi all Many Many Thanks to everyone who helped me with my TI99/4a with the new 4116 chip in its now up and running could not of done it without you guys. Cheers all 2 Quote Link to comment Share on other sites More sharing options...
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