PSU on this one was shorted. Changed bridge rectifier. Powers up ok but can't get keyboard to take instructions. Anyone had a damaged keyboard problem ? This one looks like its been fitted into the surround moulding at the manufacturinfg stage so I can't get at it even if I had a spare to fit.
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Re: Logik LCXW 37HD
Disconnected the keyboard, Using remote doesn't accept commands. Could be main board issue. Anyone had similar issues? -
Re: Logik LCXW 37HD
Is remote-sensor part of keyboard?TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
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Re: Logik LCXW 37HD
No its on its own board bottom right of set. Keyboards in middle. Both have seperate connectors going to main board. I've followed the circuits from keyboard connector which go straight across board to another ribbon which connects to another board-well screened.Comment
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Hi. I have been watching videos on how a power adaptor works.
There is explanation of the rectifier bridge to the pulse width modulator, the mosfet for switching, and opto-couplers, but there is little to nothing about the AC stage of the transformer the powers the primary coil.
So, I see that the PWM needs DC to work, but I don't see anything about how the AC gets from the mains supply to the transformer stage.
A transformer only works on AC so where is that part of the circuit.
I only see Capacitors on the output. Should I assume that the secondary coil and... -
Hello everyone,
I'm facing an issue with a HEG-001 motherboard that is unable to complete the Second-Stage Boot. I'd like to start directly with my conclusion, which is the decision to replace the MAX77621AEWI chip, and understand if it could be a correct evaluation.
Before I dive into the process that led me to this decision, I want to mention that I have a fully equipped lab where I can perform any kind of tests.
Let's begin:
Following some guides online, I tried to understand how the Boot phase of the Nintendo Switch works, and what are the... -
Boston Acoustics fans, this thread might not be for you.
A few years back (~2018 time frame), I picked up a set of free JVC speakers from someone on Craigslist that no one seemed to be interested in. The guy also had a single Boston Acoustics HD8 speaker – yes, just one cabinet. He said he had no idea where he got this one from or why it's only by itself. But like the JVC speakers, it was going to get tossed at the end of that week… so I came to collect, as usual. And that's all I know about this HD8. After all, I figured why not take it and see what's inside… show it to the...
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More Lo-Fi speakers and another DIY surround repair. The patient this time: a pair of Philips F9217L-50R speakers from a budget Philips rack/component system from the '80's. The system belongs to my brother in-law… or actually his parents. However, they didn't want it when they moved houses and he liked it anyways, so he ended up keeping it. It's a pretty cool-looking vintage system with a wood/veneer cabinet and shelves for records and cassettes. Unfortunately, I didn't get a chance to take a picture of it or get the model #'s (but maybe next time I visit, if anyone is curious?)
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Hello,
I know some might say... just buy another one. Sell it as parts..!
So had this AMP for quite some time. Recently I saw light smoke coming out of the AMP. Had my fire extinguisher close by. Just kidding. Turned immediately all devices off from mains.
Let things cool a bit, and opened up the amp device. I clearly saw on the main board which hosts the 5X amp (5.1), 3 10 ohms 1W resistors had their leads looking black, while the rest of the remaining 2 x 10 ohms were brownish as being installed from factory.
Spent some time downloading the Service...06-11-2024, 08:38 AM
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