[lmfboy01]

Hi there,

Just today I have acquired a one of a kind Sony Discman, D-77. Manufactored in 10/86, made in Japan. Well this was my uncles and I remember him showing it to me when i was like 6 or something. Then I joined this site.... Anyways, i probably would have never given this player a thought but with all these threads reguarding these types of players, I decided I really needed to try out one of these for myself! I did own a few other Sonys most notably a D-777 and a Panasonic Cd player, both bought at about 150-200 back in the day. Those are long gone.

So anyways... the D-77 i think is somewhat unique. Its AM/FM radio, lineout, and for its portable power supply, it is an attachment. It's called a "Mount Plate" CPM-100P and that baby even acts as a "Manuel/Ghetto Anti-Shock", its hard to explain but it has 4 points where you can push it in any direction. left-right, up,down, pretty awesome for back in the day. and that Mount Plate can plug into a Cigarette adapter. I think my Uncle used this in his Dodge Ram Van with 2, 8-inch subs back in the day.

Well, unfortunetly after all these years, i do not think the player works. I tried with the stoge adapter "Mount plate" in the car and also a AC adapter that is 9V but 500mA. Unfortunetly i dont have the stock AC adapter and on the player itself it doesn't show the rating for mA. Probably something to do with it being 20+ years old and electronics at that time... Would anyone here be able to tell me the correct mA rating? I may be able to pick one up somewhere or even build one if it actually came down to it...

I've been wanting to take this baby apart to disect(sp?) it. But I'm not sure what to look for. I know the Capacitors are probably shot because it hasn't been used in at least 10+ years. But can someone tell me what else to look for. I dont have a multi-meter at the moment but I can get my hands on one. i'll probably check the voltage and amps at the input. Where would i go from there?? I do remember my Uncle telling me the laser might be bad... He couldn't remember if it was for this player for his other one. Can you believe at the time they quoted him $400 for a replacement laser?? OMG that is RIP OFF!!! its freakin scandalous... Could i switch the laser from another player? If i call Sony, can they fix it? I think I may do anything and everything i can to fix the player within reason of course

so help with this vintage cd player will definetly be appreciated!
thx!

 

[Filburt]

If you can take a picture of the interior area I'll see if I can recognise the transport and lead you towards another model that could possibly serve as a donor. If you plug it in and it doesn't turn on, though, the adaptor either is not proper or there is something shot in the power supply area (such as the caps)

 

[lmfboy01]

Quote:

Originally Posted by Filburt /img/forum/go_quote.gif If you can take a picture of the interior area I'll see if I can recognise the transport and lead you towards another model that could possibly serve as a donor. If you plug it in and it doesn't turn on, though, the adaptor either is not proper or there is something shot in the power supply area (such as the caps)

Filburt,
thanks for the quick reply. I was just about to open the player up but i cant find my tiny screwdriver!! Since i will need to find out if the power supply is dead first, what will I look for in a bad capacitor? I learned this in school but its been a while since i studied about this. I know sometimes they can bubble up and appear melted? or do you think i will need a multi-meter?

 

[Filburt]

Quote:

Originally Posted by lmfboy01 /img/forum/go_quote.gif Filburt, thanks for the quick reply. I was just about to open the player up but i cant find my tiny screwdriver!! Since i will need to find out if the power supply is dead first, what will I look for in a bad capacitor? I learned this in school but its been a while since i studied about this. I know sometimes they can bubble up and appear melted? or do you think i will need a multi-meter?

Well, ideally you'd have a capacitance meter to check them but you could look for physical signs like leaking, corrosion on the PCB under it, puffiness, etc.

When I said interior, I just meant what's under the lid where the CD rests. I may be able to recognise it from that.

 

[lmfboy01]

here are some pics of the player. and WOW is this thing heavy... with the mount plate it feels like as heavy as a car cd deck! wish they still made these!

 

[Filburt]

Ah, okay, so it is the AM/FM-equipped version of the Sony D-7. As far as I know, that transport is unique to the D-7/77. You could try looking up LamerDeluxe's post on adjusting the calibration pots and see if that helps you.