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Main => Monitor/Video Forum => Topic started by: Thomas999 on June 07, 2022, 06:13:21 pm

Title: pentranic chassis failure
Post by: Thomas999 on June 07, 2022, 06:13:21 pm

Hello everyone, I need your help.

 I've got :
 Chassis: Pentranic CH-288
 Display: Pentranic A68PNT18X

 My chassis makes a sound (click-click)
 I changed all the electronic capacitors, the ic2-ic3 and something else as recommended in multiple publications and the failure continues

 Today I unmolded the hot collector (q401) and placed a lamp on +b, the "click-click" stopped and I was able to measure that the voltage of +b= 130v. With this I rule out that the problem is the source, now I don't know with which tests to continue , or perhaps to change .

Title: Re: pentranic chassis failure
Post by: lilshawn on June 08, 2022, 02:27:01 pm

me thinks if you disconnect Q401 and it no longer clicks, that Q401 is needing to be replaced.