Does anyone have a SERVICE MANUAL for my JBL Authentics L8?

SOURCE: Pioneer PDP 5030 power supply problem

Ok here's how I manage solve the problem... Having the back removed opens the contacts on the interlock switch so I guess if it powers up in this state it senses the high voltages are exposed and for safety shuts down... After this the unit will not power up and the power led flashes red continuously as described before…
After some thought it occurred to me that there may not be a problem at all, just be a simple reset function for this condition… I managed to find an easy solution to this… Just call up the hidden engineer’s service menu – On 3rd generation Pioneer Plasmas it’s as follows > Power down the screen > Hold down the “Input” and “Vol +” buttons on the front > Power the screen up and the Service menu comes up on the screen > You don't need to change anything just simply power off and from then the screen should operate as normal…It did for me so I’m well happy now!!
I hope this information will help someone else one day – Good Luck!!…Rob UK…

SOURCE: Marantz SR6001 AV Surround Receiver - Blinking Standy Light

Try pressing the power, and multi speaker button at the same time. But first turn the unit off...then press the above buttons at the same time...This is for the SR6001... GH

SOURCE: Mitsubishi TV WD-62527 will not turn on

Hi there, this is most commonly known as power board failure in the industry. the capacitors are blown. if you are experienced in inspecting circuit boards this will be helpful. you will have to disassemble and pull the power board and preform a break point test. the bown capacitors are easily picked out. they will be swollen and discolored. If you are not comfortable with disassembling this set, i suggest a service call. just tell the tech you are experiencing a power board failure.

SOURCE: Does anyone know which connector to plug into on power supply

Double check all the connections from the AC line and from the power supply to the other circuit boards. The connectors you are mentioning are identical as per the picture below.
If you need a new power supply, you can find one from this link.

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SOURCE: Samsung LTM1755B

Problem: Samsung LTM1755B with only a blinking yellow LED when you try to turn it on.

Solution: I just had one of these come in. I opened it up, and found the U501 capacitor a little suspicious looking, in that it had a deformed top. It was a 470uF 16V electrolytic 105degC 10mm x 12mm. I replaced it with a very good quality 1000uF 16V electrolytic 105degC 10mm x 16mm Nichicon UHN1C102MPD. After that repair, when I tried to turn it on, the LED was yellow for a second, then green, then I got a picture, and it appeared to work great. I then asked the owner a week later how it was working, and they said it was working just like new!