Hitachi 27GX01B pump-up Capacitor, ver...

Nov 12, 2007

- Please could i get a little help, im really getting sick of these lines at the top of my screen, theres a complete circiut diagram that you can download or give me your e-mail and i could send it to you all I need to know is which cap in the vertical output circuit is known as the pump up capacitor, if you could tell me the number i.e. c401 thats the first one in the V/O circuit. Please I would really like to get this tv working, I find my eyes drawn to the lines and rollover effect, and its very annoying. Thank You in advance, c'mon guys somebody must know the answer :P

Nov 17, 2007

- "sigh"
If your not gonna help please just say so, so I can move on to another forum to seek assistance.

Nov 22, 2007

- heres a pic.... maybe you dont belive me, orr.....whatever anyway here it is.

Feb 12, 2008

- http://www.fixya.com/support/t266710-hitachi_27gx01b check here, I posted the problem 3 times, to be sure to get a quick response, if you check the link above you will see that I got some help, but i also had the service manual.


this may or may not help, it should be on the hot side of the board "be careful" and will be near a cluster of wires that go to the back of the picture tube, there is usually a small heatsink near the wires, there are a few small radial electrolytic caps in that area, I changed c454 which was right up against the heatsink, so was the most likely culprit, it had the values " 10mm 220uf 35v" so i went to "the source/radio shack" and picked up some cheap "12mm 220uf 50v" caps and used that to replace it, "you can use a higher voltage rated capacitor, in place of a lower V cap, BUT NOT THE OTHER WAY AROUND, been working flawlessly for a few months now, hope you find the problem, I will take a quick look see if i can find the service manual for your tv, if so i will post here.

L8r, Reeves Good Luck, and watch out for the flyback tranformer it can kill.