Question about Televison & Video
Replaced stk392-150 i.c. convergence on blue gun still wont move checked all resistors ok convergence was working before replaced stk but blue was way off then blue locked up and wont move vertical so replaced stk still locked up
Your message says you "replaced stk392-150", did you replace both of the stk`s or just one of them??? One is for RGB vertical the other is for RGB horizontal, you should always replace both stk`s as a set, Hitachi recommends you use a "replacement kit"
part number X480306", this kit includes both stk`s with a new & supposedly improved set of stk`s as well as all resistors that are required for proper set-up, they strongly recommend you change all of the parts in their kit. The only other thing besides IC`s & resistors that could cause your problem is:
1) bad dcu output (you need a scope to check this)
2) you`ve lost either the +15 volt line or the -15 volt line to the IC`s, "Fxxx" chemical fuse open in power supply.
Posted on Dec 01, 2007
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Posted on Jan 02, 2017
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