Tip & How-To about Car Audio & Video

Replace the kkz-12 power amp ic on kenwood car stereos

Replace the kkz-12 ic[difficult to find expensive!]with the tda 7560!first desolder the kkz .have 27 pins.take the tda and cut the pins 1 and 25.replace the kkz with the tda now.let the pcb positions 1-2 and 26-27 pin empty.solder the ic put htc in the heat sink tight screws and check the unit!

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When you try to turn the tv on, all you get is a blinking red light, if you unplug for awhile, sometime it will come on.


Symptom: tv turns on, tv clicks once, red light comes on. Then, tv either works for a while, followed by a click, no video, normal sound and flashing red light; or, tv immediately clicks, no video, no sound, red light flashes. If that is the problem, you need to replace the convergence ICs. I had to do this twice. The two convergence ICs are mounted on palm-sized aluminum heat sinks. The heat sinks are soldered to the main circuit board. There are 4 pins soldered to the board for each heat sink, and 18 pins soldered to the board for each IC. Some of the heat sink pins are a bit difficult to desolder. The pins for the ICs are not difficult to desolder, but you must be careful not to overheat them. The heat sink and the IC come out as a unit, after all pins are desoldered. The IC is screwed to the heat sink. The correct replacement IC is a Sanyo STK392-110. I got mine from B&D Enterprises. They were not expensive. The new ICs need to be mounted to the heat sink with a heat transfer paste. I used Arctic Silver from my computer processor heat sink. Installation of the heat sink/IC assembly is a bit tricky, since you have to align all 18 IC pins and the 4 heat sink pins. When all the pins are visible through the holes in the circuit board, resolder everything. The TV should now work. Be sure to replace both ICs. My first repair was done by a technician, who obviously only replaced one. That repair only lasted a couple years, before the problem returned.

Mar 22, 2011 | Toshiba TZ55V61 55" Rear Projection...

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i have a proble whit the kkz12 it hace a 27 pins and the sustitutes have only 25 what i need to do?


replace with tda 7560.let the two more pins from kkz pin 1 and pin 27 empty in the pcb and cut off the pins 1 and 25 from the tda to solve the protect problem works fine!

Dec 09, 2009 | Kenwood KDC-MP208 Car CD/ MP3 Player

1 Answer

TDA 8364


Look it up at nteinc.net

Jan 02, 2008 | Philips Magnavox 27MS343S 27" TV

3 Answers

missing vertical deflection on philips TV


TDA 8362B IC which have vertical freq.output is at pin no.43. (vert.osc) caution for fixing this problem minimise brightness to avoid crt burn. proceed as follows 1 if you are getting sawtooth at output of ic tda 8362 pin 43 then check 1 supply at vertical output ic from eht. 2 yoke connector loose . 3 check vertical output ic parts. 4 finally vertical ic. please check for normal output from power supply even though fault gets rectified just for protection. good luck.

Sep 22, 2007 | RCA 13R400TD 13" TV

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