{ "numMessagesInTopic": 6, "nextInTime": 943, "senderId": "35PxbS8ER4PbAjZGUP-DcYNlccVSmw_ab2BwjjqstUDZ754jjWjmYQj1VE92wKYowJu3Ku5TMNxCsdB_gwanXcvVZt4", "systemMessage": false, "subject": "Re: [GE-Mpa] Re: MPA battery question", "from": "Gary Peterson <NZ5V@...>", "authorName": "Gary Peterson", "msgSnippet": "I ve looked at the LBI, and I can t figure it out in a short time (I m a lousy component level guy), but I m going to make a guess that there is some switching", "msgId": 941, "profile": "gs79602", "topicId": 938, "spamInfo": { "reason": "0", "isSpam": false }, "replyTo": "LIST", "userId": 157218573, "messageBody": "
\n\n\n\n \n\n\n\nThanks for the info Mike.
\n
\nMy buddy checked the contacts and also tried one of my batterys. We
\ngot audio but it was VERY muted, almost seemed as if the audio amp was
\nblown. The radio still gets good audio from the speaker mic. I'm\nstumped.
\n
\n> The 100 ohm resistor supplies continuous low current voltage to the
\n> radio, it really should have a 100 ohm isolation resistor but It\nisn't
\n> your friends problem.
\n>
\n> If you look at the top of the battery you should see a dual metal
\n> contact jumper, this is a jumper for the internal speaker,\nsometimes
\n> soldering on the inside of the pack will make these contacts pull
\n> inward or even become distorted.
\n>
\n> If they are ok then check the mating end contacts on the radios
\n> battery plate. There are 3 contacst aligned next to one another\njust
\n> below the fuse. One of these isn't used but the other 2 are the
\n> speaker jumper contacts which mate with the shorting contact on the
\n> battery. Make sure these are clean and not deformed otherwise the
\n> audio will go away.
\n>
\n>
\n> Mike
\n>
\n>
\n> --- In GE-Mpa@yahoogroups. com,\n"Steve" <shs_314@> wrote:
\n>
\n>
\n> >
\n> > Had Christmas dinner with a friend yesterday. He told me that\nhe
\n> > attempted to repack one of his MPA batteries. Appairently he\nbroke the
\n> > 100 ohm resistor and put a jumper across it. His radio now\nhas no
\n> > audio through the internal speaker. However he is able to get\naudio
\n> > through the speaker mic. Any ideas what happened and how he\ncan
\nfix it?
\n> > (please don't tell me too much voltage, that's what I said).
\n> >
\n>
\n
\n