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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Padmkn

Posted on Jun 12, 2011

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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2006 pt cruiser lost power while driving an now no start just loud clicking noise


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.
Even if I misunderstand your description, that should be a good place to start!

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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 gopakumarg43@ymail.com
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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Will you please give me a brief description about how your Dynex is connected to security camera device? It will help me a lot to troubleshoot. OK.

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Hello
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.

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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:
Quote
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.
Unquote
I thus assume the IC you are looking for is the IC described as IC 6.
Data sheet availible online: http://www.datasheetcatalog.org/datasheet/sanyo/ds_pdf_e/LA4425A.pdf
The IC is a Sanyo LA4425A. A 5W Power amplifier.

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