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Technical Data Sheet for Pioneer IC PD5144B

Where can I get the pin-out diagram for Pioneer 64-pin Integrated Circuit PD5144B?

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Posted on Jan 02, 2017


SOURCE: AKAI Stereo Integrated Amplifier Model AM-A1 - I

if the capacitors got plastic on their body there are the value

Posted on May 18, 2010

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SOURCE: AKAI AM-A1 Integrated Amplifier: I need the

look at this website, it should have the manual you need!! hope this helps .

Posted on Sep 27, 2010

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Technical Data Sheet for Pioneer IC PD5144B

That can be gotten form the Pioneer web site.

May 13, 2014 | Pioneer Audio Players & Recorders

3 Answers

Bose burned Integrated Circuits

I have the same problem here, this IC is shorted, is made by International Rectifier, it must be a inverter IC the number printed should be a ghost number because I can't find it, maybe BOSE ask IR to put a nonexistent number to block people fix it, the number by the way is P834 HA1M1 here is a photo also, if someone knows about which other number works here let me know please

Aug 13, 2013 | Apple Bose SoundDock Series II Digital...

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When you turn the set on the Red, green and blue color bars appear on the screen. The blue bar is distorted and the red and green bars are horizontal across the screen.

SD-643HD5 Pioneer 64 in. I can only guess what your problem is with the information you have given. The most likely problem you have is convergence since this makes the best sense with the information. This involves changing the convergence IC's (two) inside the set and possibly a resistor or two if open. It involves unsoldering the 18 pin IC's and soldering in new ones not to mention changing the resistors with the correct value. Convergence problems is a common problem in rear projections set. You must possess the skills necessary. However, if you attempt to do it I will give you the best instructions I possibly can: The IC's are located on a metal heat sink which is usually aluminum and are black and about 4 inches by 2 inches with 18 pins each. There are two of them side by side on the heat sink. You have to get the number off of them and is usually started with STK 392- and another number. Enter the number in a google search to find price and place to order. You should have no problem ordering yourself from a number of selected companies. The resistors are a cylinder shaped component with a metal connection on each end and has a color code. You must use the same code as a replacement. Sometimes the number will be on the resistor. Can be identified if open by the markings burned off of it. You can get the value from a good one that is corresponding in the same circuit usually in a pair side by side. If you possess the skills of unsoldering and soldering then you can do it. Be careful not to break the printed circuit on each pin when unsoldering and do not make a solder bridge between pins when soldering the pins. After installing you may need to adjust the convergence with the menu to the cross hatch that will appear on the screen when you get to the proper section in the menu. I hope this helps. Just be patient and don't rush and you will succeed

Dec 03, 2011 | Pioneer SD-643HD5 64" Rear Projection...

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Pin diagram of ic la76931

Please find the link below for your data sheet.

click on data sheet

Dec 31, 2010 | Televison & Video

1 Answer

I would lke to know the reference code on the audio out put ic, used in the VHF MARINE IC-M302.

Quick description as per ICOM Manuals:
The AF amplifier circuit amplifies the detected signals to drive a speaker. The AF circuit includes an AF mute circuit for the squelch. AF signals from IC1 (pin 9) are applied to the de-emphasis circuit (R61, C89). The de-emphasis circuit is an integrated circuit with frequency characteristic of –6 dB/octave. The integrated signals pass through the high-pass filter (Q5, R62–R67, C90, C91) to suppress unwanted lower noise signals. The filtered signals are applied to the AF mute circuit (IC7B), and then passes through the [VOLUME] control (VR board; R1) via the “VOL1” signal. The signals are applied to the AF power amplifier (IC6, pin 1). The output signal from IC6 (pin4) drives the internal (external) speaker.
I thus assume the IC you are looking for is the IC described as IC 6.
Data sheet availible online:
The IC is a Sanyo LA4425A. A 5W Power amplifier.

Apr 02, 2010 | Icom IC-M302 VHF Marine Radio

1 Answer

No picture

Sound like you lost Vertical Deflection.  Youshould not have a line across the screen because this could destroy the threeCRT Red, Green, and Blue (Picture tubes) if left on to long. There is a protection circuit built in to protect your CRT’s.    Check on the PCB-SIGNALboard (Tuner located on this board) transistors Q-206 Collector should be around 1 Volt Base and Emitter 0V. If the voltage atthis point is greater then 5 Volts the Vertical output IC-401 (Mounted on heat sink 7 pin inline IC) is bad, Part # LA7845.  Pin Voltages should be PIN 1= 0V, 2= 34V, 3= 32V, 4= 3V, 5= 3V, 6= 33v, 7= -6V.  Data sheet located at

Jun 22, 2008 | Mitsubishi VS-6043 60" Rear Projection...

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This may indicate a problem with the signal processor IC (Integrated Circuit)or the color burst signal might have insufficient amplitude which would also lead back to the signal processor IC. You will need a schematic to find the IC and you will need a multimeter and an oscilloscope to view the video waveform. If you do not have a background in electronics do not attempt this repair on your own please take the set to a qualified repair shop. The loss of color points to the loss of the color burst signal or the failure of the video circuitry to respond to the color burst signal.

Sep 20, 2007 | Televison & Video

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