It can’t be center-negative without being DC! ;) A lot of older Japanese electronics don’t come with the power plug and expect you to use batteries. The reason center-negative was so common in Japan decades ago is because you could use the switch in the barrel jack to automatically disconnect the battery… no microcontrollers or chips to manage charging and power source. Because Japan uses both 50/60hz in different prefectures they needed to design electronics to be agnostic of line frequency, so they made more DC stuff several decades ago. Since they were making most electronics DC, they saved even more when they could eliminate the adapter and use batteries, which is how they became the world leader in battery powered portable electronics by the ‘70s. Yes, Brother and Panasonic are Japanese. ;)
That voltage regulator you can use for replacement without having to order a large quantity is XC6216D332FR-G on mouser and minimal is one. I had to repair mines as used wrong adaptor and blew the regulator. This is for anyone looking for part as do realize your is not repairable.
The use of Custom "programmed" IC's for apps like this, make them pretty much non-repairable. They make for low cost items though. I find this stuff all the time, give it a try and then scavenge the caps and other items from them and off the e-waste pile.
I going out on a limb here but if your battery source is 6x1.5V and you needed a 9V power adapter, the voltage requirement is probably going to be 9VDC before any step down.
It can’t be center-negative without being DC! ;)
A lot of older Japanese electronics don’t come with the power plug and expect you to use batteries. The reason center-negative was so common in Japan decades ago is because you could use the switch in the barrel jack to automatically disconnect the battery… no microcontrollers or chips to manage charging and power source.
Because Japan uses both 50/60hz in different prefectures they needed to design electronics to be agnostic of line frequency, so they made more DC stuff several decades ago. Since they were making most electronics DC, they saved even more when they could eliminate the adapter and use batteries, which is how they became the world leader in battery powered portable electronics by the ‘70s.
Yes, Brother and Panasonic are Japanese. ;)
Try 120v and see if it comes alive then! :) The project may have been a failure, however the music was great success! ~Jack, VEG
That voltage regulator you can use for replacement without having to order a large quantity is XC6216D332FR-G on mouser and minimal is one. I had to repair mines as used wrong adaptor and blew the regulator. This is for anyone looking for part as do realize your is not repairable.
Thank you for the info! I assume the wrong adaptor was used here also.
The use of Custom "programmed" IC's for apps like this, make them pretty much non-repairable. They make for low cost items though. I find this stuff all the time, give it a try and then scavenge the caps and other items from them and off the e-waste pile.
I going out on a limb here but if your battery source is 6x1.5V and you needed a 9V power adapter, the voltage requirement is probably going to be 9VDC before any step down.
Your luck is like mine when it comes to tiny solid state stuff..LOL
I have found that almost everything that has a 3.3 volt regulator is fried if that ever goes bad. :-(
where are the televisions ?
The Televisions are behind & on either side & growing impatient. lol.
You can't win 'em all! Good try though.
From my experience, Brother products are ok but not designed to be repaired.