I have an old small portable radio I'm trying to repair. It runs on 3v, and is supposed to be able to do so from either two D cell batteries, or a 3v AC/DC converter supply.
The issue:
It works perfectly with the AC power plugged in.
It does not work with the batteries.
I am handy enough w/ a soldering iron and a multi-meter tester.
I verified that the batteries were installed correctly.
I have tested the batteries. Both are brand new, each reading around 1.6v, and taped together outside the radio, 3.2v. So power supply is not the issue.
I have opened the radio and checked the solder points for all wires that connect the battery compartment and terminals to the radio's main circuit board. One was pretty bad (none of them were pretty), so I re-soldered it. The conductivity through that joint is reading fine, but still no power to the radio.
I even tried plugging a "dummy" jack into the AC supply port, and shorted across its contacts, to try to bypass any sort of switch that might be in that port itself.
Not that the brand or specs matter, but:
"Borg Johnson 12Band FM/TV/MW/SW1-9 Receiver HS-912R"
Yes, I can go buy another one for a couple bucks at a thrift store. Spare me the "duh" comments please ;-)
I like this one for the TV and shortwave reception. And I wanna try to fix it because I'm not used to getting stumped by such a seemingly simple repair.
What am I missing?
The issue:
It works perfectly with the AC power plugged in.
It does not work with the batteries.
I am handy enough w/ a soldering iron and a multi-meter tester.
I verified that the batteries were installed correctly.
I have tested the batteries. Both are brand new, each reading around 1.6v, and taped together outside the radio, 3.2v. So power supply is not the issue.
I have opened the radio and checked the solder points for all wires that connect the battery compartment and terminals to the radio's main circuit board. One was pretty bad (none of them were pretty), so I re-soldered it. The conductivity through that joint is reading fine, but still no power to the radio.
I even tried plugging a "dummy" jack into the AC supply port, and shorted across its contacts, to try to bypass any sort of switch that might be in that port itself.
Not that the brand or specs matter, but:
"Borg Johnson 12Band FM/TV/MW/SW1-9 Receiver HS-912R"
Yes, I can go buy another one for a couple bucks at a thrift store. Spare me the "duh" comments please ;-)
I like this one for the TV and shortwave reception. And I wanna try to fix it because I'm not used to getting stumped by such a seemingly simple repair.
What am I missing?