Question about Nokia 2690 Cell Phone

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I lost the ic used for signal purpose, how much cost it was? and what type of ic was used in it? give me brief description

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Posted on Jun 12, 2011


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From your brief description, It sounds like you lost your ground connection. Check the Negative (black) terminal connector on the battery, and check where the cable connects to the chassis.
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Before i get this set after 2 or 3 hours shutdown now i changed the DM board has no video 7 sound then i put the old board back now it shutdown in a second i can't check any voltages but i changed the...

Hello Ronald
Will you please come over me by my Email address. I'll give it you here. I want to get some more details about your doing, and other things that I want to know, before posting a solution to your TVs' problem. Without knowing details, posting a solution will be for nothing. By Email, I can send you the details, and you can send and ask doubts to me. Isn't it best?
Come over me by
Give me a brief description about the fault occured first to your tV, repair work you have done to it.
Give ma a brief description by Email. If it is with Email, I can send documents, pictures etec to you that will help you too. OK.

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You wants to know about the use and stage which TDA9370 is used I thinks and gives you reply.
TDA9370 PS/N3/A/**** is an Integrated circuit, desigened and developed by Philips, having 64pins dual in line type. Used as an all purpose jungle IC, contains most of the TV ciruits in it, otherwise called 1-CHIP MICOM also. It contains microcomputer section, Luminance and Chroma section, Vertical and Horizontal oscillator section, and all other sync: sections for the Tv., and have electronic switches and other integrations to receive signals form out,and to give sgnals to out. will be a little costly, as ti contains so many sections and integration process is a little bit difficult. OK.

Jan 05, 2011 | Daewoo Televison & Video

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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.

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