Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
Zenith SJ7743RK pix overloading (C-3)
Hello
Zenith SJ7743RK, (C-3 chassis) Signal module 9-1054-01. TV has overloading with the pix washing out, with scene change. Also sync is a bit tenuous. Adjusting the video level pot helps, but not enough range. CRT checks good (surprise!), and I have bypassed PIP to eliminate that. I have seen this commonly on these TV's, this one from 1992, but have gotten around it by adjusting the video level. I suspect an electrolytis is to blame, but have never dug into this problem to find the culprit. Have any of you? I sure would appreciate the quick fix. Thanks David, on the Illinois prairie. |
#2
|
|||
|
|||
Zenith SJ7743RK pix overloading (C-3)
No reason to go any further with that set, bad crt.
wrote in message oups.com... Hello Zenith SJ7743RK, (C-3 chassis) Signal module 9-1054-01. TV has overloading with the pix washing out, with scene change. Also sync is a bit tenuous. Adjusting the video level pot helps, but not enough range. CRT checks good (surprise!), and I have bypassed PIP to eliminate that. I have seen this commonly on these TV's, this one from 1992, but have gotten around it by adjusting the video level. I suspect an electrolytis is to blame, but have never dug into this problem to find the culprit. Have any of you? I sure would appreciate the quick fix. Thanks David, on the Illinois prairie. |
#3
|
|||
|
|||
Zenith SJ7743RK pix overloading (C-3)
Art wrote: No reason to go any further with that set, bad crt. Art Thanks for the input, but the CRT is NOT THE PROBLEM. Did you read my post? I eliminated that right off the bat. David, on the Illinois prairie. |
#4
|
|||
|
|||
Zenith SJ7743RK pix overloading (C-3)
Can we assume you already replaced the 22uF capacitor near the jungle
ic that always goes bad on these? Is the video washing out on the whole image, or can it happen in banding across the bright part? |
#5
|
|||
|
|||
Zenith SJ7743RK pix overloading (C-3)
I have rejuvinated a lot of Zenith 25, & 27" CRT's
this year, & lost none of them. It's all how you go about setting up & using the rejuvinator. Check the electrolytic on the CRT board, if the unit has one, & the one by the jungle IC like the other poster stated. Sky. wrote in message oups.com... Hello Zenith SJ7743RK, (C-3 chassis) Signal module 9-1054-01. TV has overloading with the pix washing out, with scene change. Also sync is a bit tenuous. Adjusting the video level pot helps, but not enough range. CRT checks good (surprise!), and I have bypassed PIP to eliminate that. I have seen this commonly on these TV's, this one from 1992, but have gotten around it by adjusting the video level. I suspect an electrolytis is to blame, but have never dug into this problem to find the culprit. Have any of you? I sure would appreciate the quick fix. Thanks David, on the Illinois prairie. |
#6
|
|||
|
|||
Zenith SJ7743RK pix overloading (C-3)
|
#7
|
|||
|
|||
Zenith SJ7743RK pix overloading (C-3)
|
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
wanted: schematic for service number: MWJ2722H2 (27" zenith console) | Electronics Repair | |||
Won't buy another new Zenith | Electronics Repair | |||
Zenith tv service manual wanted | Electronics Repair | |||
Rewinding pc coil for 9-1270 Zenith boards ?? anyone know inductance? 9-1270-02 9-1270-3 mod# SR3587DT | Electronics Repair | |||
Zenith TV problems | Electronics Repair |