I have two problems, #1 a 42" hp plasma tv that starts black and develops white clouds that expand to fill the tv and bring up the screen, #2 42" akai lcd tv that pulses.
42" tvs
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by jundahi, i also have the same (P5V_S4RS3) MacBook Air A1466 820-00165-A 5V Rail Pulses (on & off) The strange thing is when I kept machine for 1 day and connect the power It powers on with Chime and booots half way with Apple logo and stuck. at that time when I power of and try power up Fan spins for few seconds and goes off with no P5V_S4RS3 and also the P5V_S4RS3 EN pulses on and off with 3,24 V. Plezzz doesn any one can help me
08-26-2024, 09:54 AM -
by DannyxGood day folks. I thought I'd share with you something I did today, just for a laugh and for a bit of a discussion, since I'm still not entirely convinced what happened there.
I found an Akai LT-3220AD TV in the dumpster - literally - so me and my colleague brought it back into the shop and dusted it off a bit to see if someone maybe gave up too soon.
Long story short: backlight came on but had no picture. My colleague attempted to reprogram the SPI chip but it didn't change anything, so we concluded it must be the panel that's faulty, especially after reading about it...01-29-2024, 10:12 AM -
by GenaugmenI got this akai MPK 261. Had no power from USB. Optional Power adapter caused some light smoking, so unplugged and disassemble to get to the main board. There are two surface mount inductors near the power input. One look obviously damaged, removed both for replacement. Then there's this IC a few components away (pictured) that I can't identify. I've done plenty of plenty of surface mount component work, so replacing it isn't a problem. Any insight into what this could be would be greatly appreciated....
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Channel: Troubleshooting Audio Equipment
09-17-2023, 01:17 PM -
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by sumilumiHi fellow troubleshooters. This is my first post on badcaps. I've recently setup an electronics workbench. i'm also building a studio with old equipment bought faulty at low cost.
I've been into electronics since the mid 80's and particularly in the last few years though only getting hands on with repairs now. My knowledge gaps are significant so I'll be posting here to seek guidance advice and general practical applied learning.
On my bench today is an old ca. 1993-95 Akai hardware sampler. This runs on both a linear and Smps supply. Both are getting on in age and ripple... -
by alltvrepairsHi,
The original fault was set not loading completely and reboots. I have downloaded a firmware on usb, tried the upload but midway says incorrect spftware and shuts down. I have blank raster now.
Anyone has experience on this mainboard?
In the download there are other apart from CtvUpgrade.bin
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