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Message: <blockquote data-quote="someotherguy" data-source="post: 20490" data-attributes="member: 6178">Couple failed attempts to start brought it down to showing just under 9V. Warrantied it out with Pest Boys, only had about 6 months left on the 36 mo warranty.[ATTACH=full]1482[/ATTACH][ATTACH=full]1483[/ATTACH]We did discuss in here at the time that the 130A rating on my load tester probably isn't really sufficient for doing automotive batteries. It's not like it's gonna replace a professional level piece of shop equipment like the old Sun VAT-38 at the shop I learned at back in the 80's.  However, it didn't take much for this little OTC to indicate a weak battery, so it did at least let me narrow it down before guessing at other parts of the system (again.)Next up pulled the radio apart (again) and touched up solder joints on the connector, sprayed the sockets with DeOxit, and gently bent the little ground tabs on the chassis so they'd touch the faceplate a little better. It was buzzing after hitting bumps in the road and pissing me off[ATTACH=full]1484[/ATTACH]Hooked it back up and it still works, so I guess I didn't break it. We'll see if the symptoms are gone later.. (and yes, no more display drop-out, no more buzzing!)[ATTACH=full]1485[/ATTACH]Richard</blockquote>