This M70 was really in good condition except for the chopping radio sound. The owner told me that when it was in the stereo mode, sound from left side cut and start makes very difficult to listen to the music. At the first condition check, I found out that both antennas were wobbling, it seemed like the mounting of the antenna was damaged. So this time I used the strong plastic bond to create a tight mounting for the antenna base and replaced both antennas to the new one. At the same time, I restore the cassette door's slow open motion. Whenever I see the M70, most of them have the same problem. The cassette door opens abruptly, not smoothly and elegantly. And this is coming from the design flow of the cassette door gear, that what I think.
The front clear lens for the tuner scale was also in good shape. Not much scratches and scuff marks. And it was attached firmly to the body. So I decided not to remove this clear lens, and try to wash only other parts of the front case.
The cassette deck main belt was also replaced. By the way, inside of this M70 was untouched by anyone. So I was able to check the original wiring and setting from the bottom to the top. I took many pictures and notes. I am sure that will help me a lot on the next M70 work.
In the film, I had a cough and sneeze from the dust. Probably I have had been exposed too much dust during the boombox and other vintage electronics restoration. Even this M70 seemed almost dust-free, still, my dust-allergy reacted right away. So I am now wearing a mask to protect myself from dust. So should you.
At the end of the day, the clean sound was restored.
Enjoy!
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The owner of this M70 is Mr.Douglas. Thank you for letting me to restore your boombox.
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Demonstration tape (Hitachi original)
1) Racing sound dynamics
2) Battle of Jerico
Donation welcome!
I appreciate if you fund me for the new camcorder and computer to edit my next youtube projects. Thanks. Teddy Hashee
www.paypal.me/teddyhashee358