First post, by Intel486dx33
Hello, Received my non-working Macintosh TV today which I purchased on eBay for Cheap because the guy said it was not working and had been stored in his basement for over 25 years.
Luckily he double boxed the mac and wrapped real good in bubble wrap so it arrived intact without any damage from shipping.
First thing I did was to open up the rear and remove the logic board for inspection.
It appeared to be in not to bad of condition. A little dusty but okay. Even the Nicad battery had not ruptured and leaked all over the logic board.
Which was one of the things I was concerned about when I purchased it.
The Logic board bay has a little rust but nothing major. Some WD40 should clean that right up.
So I have a working Macintosh Performa 575 which looks almost identical to this Mac TV. But the logic boards are a little different but the logic board socket contacts are the same.
So I put the Performa logic board into my MacTV and turn it on. Shabam ! It worked. Even the the display is in really good shape with no distortion in the CRT image.
Works better than my Performa 575.
So I then did a thorough inspection of the MacTV logic board, Cleaned it up a little and put in a NEW battery. I cleaned up the contacts and put it back in the MacTV.
Shabam again ! It worked. So now the MacTV working with it's original logic board.
I took the MacTV inside and hooked it up to an antenna. Awwww, It did not work. When I switch to TV mode the MacTV tries to initialize the TV tuner but all I get is a black screen.
I tried different antennas but to no avail. I get not response from the MacTV after it switches to TV mode. It will not respond and will not switch back to PC mode.
I have to power cycle the computer in order to get to work again.
So what do you think ?
Software problem ?
Hardware problem ?
TV tuner problem ?
Logic board problem ?
The TV tuner does have quite a few caps on it. Maybe some of the caps on the TV tuner are bad ?
Or maybe the logic board has some bad caps still ?