Question about Panasonic Audio Players & Recorders
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Posted on Jan 02, 2017
Hello. There is a hardware failure with the laptop not the AC charger. AC chargers have some range of protections of their own. If the power requirements of the laptop are bigger then what the charger can handle, the charger will turn off. Also other parameters can bring the charger offline. In your case, you have a problem with a small chip, the battery charge controller unit, witch regulates the amount of current required to propperly charge the battery. When this thing fails, the charging requirements for the battery are reported rong and the AC charger is forced to give more power then necesary. This results in disconnection of the AC charger ( an internal fail safe of the AC charger) and the laptop to swich back to battery power. When the laptop is turned off, it can charge the battery because the power requirements are low, having all processor, main board, hard disk etc turned off. Therefore the AC charger can handle the load. However you will need to have it checked by a service center as it is a hardware fault. Both AC charger and laptop needs that check. The charge controll circuit needs to be replaced probably. It will be a somewhat expensive repair. Don't buy any other battery untill you have the laptop checked. For more aditional info please post back. PS. Sorry for my bad english, I am from Romania, it is pretty hard for me to explain tehnical stuff in english.
Posted on Feb 16, 2007
SOURCE: Yamaha RX-V420 No power
If the standby voltage exists, the next step is to see whether or not the clock is working. Find the main micro chip. There should be a 3 legged crystal close by. You should see this oscillate (use a scope). No oscillation = no micro control = no turn on. It is possible that the micro is bad or the crysal is bad. Also, check to be sure that the output transistors are not shorted. It is also possible that these are preventing the system from turning on.
Posted on May 12, 2008
SOURCE: CD player on boombox
The laser is dead or damaged. Try swabbing the laser with rubbing alcohol on a Q-Tip, then IMMEDIATELY blowing dry with canned air. If this fails, the laser is dead. If it is a Sony KSS-2xx series laser (try to peek in the laser slot to see the decal on it) you can get replacements online. If not, it's junk.
Posted on Aug 04, 2008
The part is available from tritronicsinc.com. It costs $8.74. Just enter the part # and it will come up. Good Luck!! Please rate this solution!! Thanks!
Posted on Oct 05, 2008
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Jun 23, 2011 | Panasonic RX-ES25 Cassette/CD Boombox
Jan 23, 2011 | Panasonic RX-D20 Cassette/CD Boombox
Anything that has a headphone output can be adapted to feed an RCA cable pair for standard stereo to any audio device with a standard RCA input. Get a cable like the one described here:
and connect it into any available analog input EXCEPT "Phono". Turn the MP3 player volume up.
Jan 22, 2011 | Panasonic RX-DX1 Radio/Cassette/CD Boombox
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Oct 20, 2009 | Panasonic RX-ES25 Cassette/CD Boombox
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