Hitachi Repair Tips

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Results: 1065

Make	Model	Symptom	Problem
HITACHI	C28WS10TN	Poor starting, some times comes on then cuts out with led going out	Dry joints along centre heatsink where the three ics are mounted, reflow solder on ics and then check ht 160 volts
HITACHI	C1709T	Dead h.t high and tripping	Replace zd903 and r909 39k also check zd901 2.7v for s/c
HITACHI	CPT1446R NP84CQ	H.t fluctuations, picture becomes half white and half black. h.t varies from about 80v to 110v	Replace zd902. it's a 10v zener diode
HITACHI	C32WD2TN2 A7	Volume goes to maximum when volume plus or minus selected	Replace r039 10k pull up resistor for micro switches, gone slightly low value
HITACHI	C2519T G8Q	This set was dead apart from a hissing sound from the speaker, no standby led	5 volt regulator on front panel had 13 volt input but only 1 volt output, replacement cured the fault
HITACHI	C2867TN	The set was going off intermittently	Resoldering all three pins on regulator ic952 cured the problem
HITACHI	C32W511TN A7	Intermittently goes to standby	Check r959 as described by mark c24w511tn and found no problem there, however i discovered that several connections in the area of r959 had fractured. they appear to be components near/attached to a heat sink. re-soldering the joins did the trick
HITACHI	C2846TN	Intermittent partial collapse of picture vertically picture squashes down temporarily	See field collapse tip - it will happen so anticipate it and correct at you leisure rather than have the tv fail completely in the middle of you favourite show
HITACHI	C2846TN / C2546TN	Field collapse horizontal white line on screen	R710 dry joints. same as c2146tn & c2546tn problem solved with thanks to mike g & barty. power off/unplug. get to circuit board underside with aerial socket up-r710 is near top and right of centre-cluster of 4 joints best resoldered
HITACHI	C2886TN	Procedure to enter the service mode	Press & hold the menu key the installation line should now appear, with the install menu displayed press both the volume up and down buttons for about 8 seconds until the service option is available then follow the on screen directions
HITACHI	C28W410SN	Sound crackles and whistles a short time after switch-on. gets worse as set warms up	Solder all links and components that have unpainted copper areas around component legs on upper side of main board near to the audio processing i.c. the same applies to the components near the microprocessor
HITACHI	C28W410SN A7	The set reverts to standby intermittently	Set ht control had invisible dry joints
HITACHI	C2146TN	Dead / int, led lit	Check the 5v regulator ic952, 8v regulator ic951, standby regulator ic950 and the field output chip ta8427k or for dry joints on the regulators
HITACHI	C1714T	Frame collapse, causing set to go dead, also can cause the regulator transistor, to go s/c. but12af. h.t. unstable	Check r951 39k goes high, in this case 65k, causing ht to go high
HITACHI	C2846TN 311	Frame collapse or dotted line	Check and replace frame ic ta8427k or check r710 for open circuit, also check for possible dry joints on d601
HITACHI	VTM640	Low video level	Replace c1530 47uf, 16v
HITACHI	C2133TN NOKIA STEREO PLUS	Very strong red content in the picture, sometimes the fault would clear with the strong red content fading until the correct greyscale was achieved	After much searching around i found the problem. there was a very small crack in the solder at rh23, this is a 2k4 surface mounted resistor located at the back of the tube base. resoldering both sides of it cured the fault
HITACHI/FUJIAN	HFS1425	Store function inoperative-does not hold memories.	Pin2 of m58655 memory chip, must be at -30v. if not, check/ replace c920 1uf/250v cap.
HITACHI/FUJIAN	HFS1425	Store function inoperative-does not hold memories.	Pin2 of m58655 memory chip, must be at -30v. if not, check/ replace c920 1uf/250v cap.
HITACHI	TN2166/2146	St/by only - ht=90v	Dry joint ic952 5v reg