I need the circuit diagram of a JBL LSR2325P active speaker. Or help in diagnosing the fault. Symptom is the front power LED not working and no audio. There seems to be power to the amp chips though. Thanks

Mike Duncan

• 219 Answers
• Posted on Jan 18, 2007

SOURCE: Rotel RA 9808X Amplifier

I'd suspect that one of the two output transistors on that channel has gone bad. If you are unsure how to test or troubleshoot this, then you might try replace both the NPN and PNP outputs and catch the bad one that way. If your amp uses an output module then you would of course have to replace the module which would replace all the output transistors on both channels. Good luck. Another thing to look out for, is the emitter bias resistors. They are the large white ceramic ones near the outputs. Sometimes one of those will open up too. They will be of a very small resistance value like .5 ohms (point five ohms) or something in that general ballpark, and have a wattage value of typicaly 5 watts. So they are pretty big resistors. Be sure to check them all even if you do find a bad output transistor. They will often go out with the transistor. Good luck.

SOURCE: PC Chips M955G Motherboard Front Panel Pinout

i suggest to find in website..www.Fixya.com
if not found..post it again so that we can suggest another site.

thanks

SOURCE: Intel PENTIUM-4 865GV CHIP Circuit diagram

There has been no need for a Turbo LED for at least 8 years and probably closer to 10 years. Turbo LEDs were primarily used with the old 386 and 486 computers dating back to 92-96 and even a bit earlier then that.
865GV is a chipset number, not a motherboard model #. Many different companies produced motherboards based on the 865GV chipset and that information alone is BY FAR NOT ENOUGH information for us to work with in determining exactly which motherboard you are dealing with.
There should be a motherboard model # printed on the motherboard somewhere, might be hard to see, but if you can't find one, the chances are you are using one of the cheapest low-end motherboards made and the stituation will only get worse from there.

SOURCE: PC Chips M955G Motherboard Front Panel Pinout

http://www.pcchips.com.tw/PCCWebSite/Downloads/ProductsDetail_Download.aspx?detailid=302&DetailName=Driver&DetailDesc=M955G(V3.0A)&CategoryID=1&MenuID=74&LanID=0

Go here for the manual

SOURCE: auto speaker wire diagram

FYI - I just took our 2004 Sequoia in because of speaker rattle coming from the front door speakers. Before I could tell them the problem, they guessed what it was. They see loads of Sequoias and Tundras with JBL systems due to the front door 8in speaker, basically, coming apart. His suggestion was to replace only the bottom 8in speaker, because the top tweeters usually are in good working condition. There is a minimal failure rate on the tweeters.