tillenterprises #1 Posted December 3, 2009 I have a Colecovision that just gives a blank screen and sometimes hums when turned on. I checked the usual suspects- RF connection, power supply, dirty on/off switch, and finally opened it up, and saw a sticker on the chip located at location U2, looks like it was serviced or the problem diagnosed at one time. Does anybody know what this chip is, or how I can get a new one? I might also try replacing the Z80 processor. Thanks for any help! Quote Share this post Link to post Share on other sites
+save2600 #2 Posted December 3, 2009 Have you tried reseating all of the socketed chips yet? Quote Share this post Link to post Share on other sites
tillenterprises #3 Posted December 3, 2009 Have you tried reseating all of the socketed chips yet? All the chips are soldered in- I don't see any socketed chips. Is there any PCB diagram that states what each chip is for? By the way, I like your avatar! Quote Share this post Link to post Share on other sites
tillenterprises #4 Posted December 3, 2009 I'm pretty sure the problem lies with the BIOS chip at location U2. Does anybody know where I can get one of these chips?- Anybody have extra Colecovision parts, or can someone program one of these chips for me? Quote Share this post Link to post Share on other sites
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