These are pictures and spec sheets of the IC's
Attached Files
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Last edited by budm; 06-26-2020, 10:21 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: Altec Lancing ACS41
I still have this system on my computer. It has worked quite well over the years and still sounds superb. Music is smooth and clear. Newer systems I tried don't give me that 'thump' I like to hear. Good one, budm. -
Re: Altec Lancing ACS41
These are good systems and worth repair/recap. I have an ACS48 coming in for repair and it looks really well built.
You can change out the LM324 for a better op-amp with less cross-over distortion, which cleans it up.Last edited by redwire; 06-27-2020, 08:35 PM.Comment
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Re: Altec Lancing ACS41
Hello Redwire, can you tell me what to replace the KIA324P with and should I replace both, that's if I get them working again.Comment
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Re: Altec Lancing ACS41
I know the LM324 has a gritty sound/mid-range blare to it due to the cross-over distortion so I change them out. Quad op-amp alternates:
LM837 is older and drop in. OPA4134 is very good as well.
The LM833 and OPA2134 are the high performance duals, to ditch the NJM4560 but it is not as bad.Comment
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Re: Altec Lancing ACS41
Thank you.Comment
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Re: Altec Lancing ACS41
TA8248, TA8229. Notes: (***V) Voltage with headphone plugged in. When headphone is plugged in the VCC2 from the switched headphone jack is cutoff so there will no VCC2 on pin 8 of the TA chip.
Pin 1: N.C.
Pin 2: Bootstrap 2 =18.20V (0.56V)
Pin 3: Output 2 = 9.42V (0.51V)
Pin 4: VCC1 = 18.47V (18.47V)
Pin 5: Output 1 = 9.03V (1.00V)
Pin 6: Bootstrap 1 = 18.16V (0.52V)
Pin 7: PWR-GND
Pin 8: VCC2 = 18.47 (0.05V)
Pin 9: Ripple filter = 9.63V (0.51V)
Pin 10: NF1 (Negative Feedback 1) = 0.60V (0.95V)
Pin 11: Input 1 = 0.06V (0V)
Pin 12: Input 2 = 0.02V (0V)
Pin 13: NF2 (Negative Feedback 2) = 0.60V (0.56V)
Pin 14: Pre-Gnd 1
Pin 15: Pre-Gnd 2Last edited by budm; 07-03-2020, 08:11 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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I am trying to repair my monitor that shows image but the backlight is not turning on. I think either the power supply is not working properly or the LED strip is failing, which seems unlikely (the whole strip is off).
I really need help in finding the data sheets for this monitor's boards. The data sheets I need are for the following boards:
Power Supply: 715GA907-P03-000-001S and 715GA721-P01-000-0H4K
Main Board: 715G9500-M0C-B00-005K
T-CON Board: 19Y_270_EU3MQ_SR_V02_HF
If someone could please provide any of these data sheets, it would be awesome....05-31-2025, 11:12 AM -
Can you clean the internal sheets of a tv? I have a 58-inch TV and I don't know if it's worth cleaning the sheets. I have seen that it has dirt on the sheets and the leds are blown. I don't know if they look good when you clean the sheets. Thanks in advance. -
I thought I'd throw out some of my personal experiences in the last 12 months with Intel iMacs, 2.5" SATA SSD drives and Fusion drive data recoveries.
As a backgrounder, Apple never fitted a 2.5" SSD's to these iMacs. Apple's SSD option was a system of 32GB NVMe blade drive (NGFF connector) and Seagate 1TB 2.5" HDD, married together in software to become a Fusion drive. Non Fusion systems have just the 1TB Seagate HDD.
So, the most common reason an iMac comes across my bench is because it's either ridiculously slow, or it fails to boot at all. The most...12-18-2024, 10:34 PM -
ABOUT ME INTRODUCTION FILE
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Hello,
I have this old (2004?) Altec Lansing ATP3 and i would like to replace the capacitors. I have identified 34 out of the 36 of them as Samxon GR of various capacities and voltages.
I can't find datasheets for the Samxon in any of the following variants:
10000uF 25 v - this one i really want to replace because i suspect it is what causes a dull hum regardless of the volume knob position or if the source is plugged in. I am eyeballing the Rubycon 25PK10000MEFCGC18X35.5 for this purpose. So if i pay a 10x the price part for shipping i might as well go ahead and...
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