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Good day, i want to make a decade counter using ic sn74ls90. my problem i want know how to make a schematic diagram using sn74ls90 ic chip for decade counter..pls help me.

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Use this datasheet, it talks about how to configure the decade counter for this chip


Posted on Oct 05, 2009

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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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I want supply voltages& pin numbers of tda 9380ps / n3 / 3 / 1664

To get more details, check these links. Schematic diagrams of some sets, using this number IC is given. You can refer it. If you do not find it there, inform me. The schematic diagrams are in PDF, and cannot send by this window, as you know.

Dec 13, 2013 | Televison & Video

1 Answer

Toshiba 24af45 horizontal

If rolling in a right to left and not up down it is a sync problem--horizontal sync comes from one of two places in general---a pulse off the high voltage transformer or directly off of what is called in the trade the Jungle IC.

That is not a joke--Most of these sets use a large IC (63 pins or more not unusual) that contains: color, video, vertical drive, ABL and much more---so much is crammed into that chip it decades ago was named the Jungle for clear reasons.

A schematic and or scope may be needed to trace and find what is bad.

if off the high voltage transformer (more common in old sets than new ones) it will be a open resistor.

If at the jungle you would have to go to the pin with the sync and follow it out to see if none at source or if lost somewhere down the stream.

May 29, 2012 | Toshiba 24AF45 24" TV

1 Answer

My galaxy dx99 my frecuency counter is not workin adn the chanel nomber too.please help my.need to see the diagram for frecuency counter that help me toooooo than

Hi and welcome to FixYa,

Your post "...need to see the diagram for frecuency counter...", please see below schematics.


Good luck and thank you for asking FixYa.

Dec 19, 2009 | Radio Communications

3 Answers

I need datasheet for AT2005 IC

Datasheet here:

Jan 30, 2009 | OEM Systems ATX P4 350 Watts Power Supply...

1 Answer

Troubleshooting main board.

Three things to look for in service with LCD monitors,
1 bad capacitors
2 Bad transistors for the back light feeds
3 bad ic pulse chips for the Non function circuit
you will not find schematics unless you peruse the patent office records, reverse engineer the circuits and you will have a schematic
when the main chip fails on the vga board its time to buy a new vga video board,
sounds like your board may be suffering a bad IC telling the main chip the power is OK

let me know how it goes.

Dec 29, 2008 | HP w19 19" LCD Monitor

4 Answers

For Sony KV-1415WR problem


First :
what chassis your tv set have ?

#2 : Where exactly the location of D608 ?

#3 : How may time the LED Blinking ? like we all know Sony have selft diagnostic with it ?!

I hope hear from you soon...



e-mail :

Oct 08, 2007 | Sony FD Trinitron WEGA KV-27FS100 27" TV

1 Answer

No verical

Hello gurdev, If all you have is a straight horizontal line across the middle of the screen, you have a vertical deflection problem. This may be caused by the opening of the vertical coupling capacitor, an open winding in the yoke transformer, the vertical drive transistor might be malfunctioning, or the vertical output IC chip might be defective. You will have to check all of these, make sure that you have a schematic, a multimeter, and an oscilloscope. Here is why: 1) schematic diagram to know where parts are and the voltages and signals present at test points. 2) multimeter to measure DC voltages on the pins of components 3) oscilloscope to measure signals at test points shown on the schematic. If you do not have a background in electronics please take your set to a repair shop, however if you have a background in electronics your troubleshooting will be around the vertical section if the tv. Thank you, Shuttle83

Sep 16, 2007 | JVC AV-27230 27" TV

2 Answers


if you can remove the rear panel assy. look for the convergence ic's they start with stk--- and you got the part number you need a source panasonic is 814 source and the number on the ic's stk 390 ----/

Aug 22, 2007 | Panasonic PT-53WX42 53" Rear Projection...

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