Question about Jensen Car Audio & Video
It sounds to me like a corrosion issue at the face/unit connections. Look for any signs of greenish buildup. This can be cleaned with a q-tip and some alcohol.
Posted on Feb 17, 2019
Unplug it and plug it back in for a reset. Also check the contacts on the detachable face plate. If there is a fuse on the radio itself check it.
Posted on Feb 16, 2019
Posted on Feb 15, 2019
remember secondary voltage is AC like the primary voltage, only its reduced typically 120vac primary and 12 or 18vac secondary then the ac secondary is rectified using a bridge rectifier to get the 12vdc then a filter circuit is applied to remove any electrical noise.. any way the problem is with the dc voltage side of the circuit and unless you know how to troubleshoot the circuit you will not be able to repair it. my experience says it might be a bad bridge rectifier.
Posted on Dec 31, 2009
Testimonial: "Thanks for your help as I am not trained to troubleshoot ic's and such I will go ahead and replace the charger with a new one. "
Your main board is faulty. I've done several of these but haven't been able to figure out which component is actually bad these yet. I've simply had to replace the board itself, and it fixes it every time. One thing you can do to get your backlights to come on (and so you know I'm not Jive'n you) Is unplug the three wire bundle that spans from power supply to main board. This will usually make the backlights fire up. I even had one that after I left it that way for a minute (with the backlight on) it suddenly started working again! But this was short lived. :-(
One time I even tried recapping the entire main to see it that would fix it. It did not. I think it might be something to do with the small chip labeled SL37HA37. It's a 16 legged bastard near the 3-wire plug I told you to pull. It's that or possibly the bigger IC near it that has a heat sink on it. The ball grid array solder joints may be faulty. Just guesses, if any smart guys out there figure this one out, be sure to tell the rest of us please!
Thanks, Chris Boise LCD www.boiselcd.com
Posted on Apr 23, 2010
Have you replaced the ballast or did you just replace the capacitor? If you did not replace the ballast I would start there. Also if you have a multimeter check your bulb for continuity you may have gotten a bad bulb.
Posted on Jun 11, 2011
let me google that... http://www.stanleysupplyservices.com/product/pdf/jtm105a.pdf
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Posted on Dec 13, 2014
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