Main > Monitor/Video Forum
Pentranic 1132 (CH-288) No Picture & Chirping - [FIXED!!!!!!]
gokun:
Hi again;
Rick-Yes, I am taking your advice and replacing those caps just to be safe(new ones are already ordered). And while I am certainly determined, it is not unthinkable that this project could reach a point where I'm either too inexperienced or too frustrated to continue, which means shelving the monitor until later...should I reach that point, I would certainly be looking to get a new monitor from you, so be expecting an email tomorrow regarding that quote. :)
As to the monitor situation, I have the pics I promised earlier...all are clickable thumbnails which link to the big pics on imagevenue...
First one is a pic of the monitor doing its chirping thing...just took this to be sure there were no visible sparks, fireworks, etc...
Next pic is my "sketch" pic of the chasis board with the components I'm interested in marked where I think they are located....please be sure that I am looking at the right things(thanks!)...
And finally, the pic of the current suspects....c313, c501, L902(?) and the big cap(it's located near t501 but did not see a ID number around it...anyways, I have drawn arrows to the areas I feel are suspect, and if you look carefully you can tell that the big cap is leaning to one side(because of the bulge)...all these except that weird L902(?) part with the two rips in its casing are on order....but I need help identifying the weird part, and you guys' opinions as to if it looks bad or not....
qrz:
per pic,
the "bulging cap" is the raw B+ filter cap. the plastic cap does tend to stick up a bit over time .
if the aluminum below this cap is not deformed , the cap may be ok.
the vert output ic is on a heatsink near the ha11235. (the ha11235 is the h/v osc ic )
qrz
gokun:
doh! thanks very much for the clarification as usual! :)
Also, do you happen to know what model flyback would work on this should I have to replace it?
It seems the one that is on it is hard to find so was hoping to find an easier to locate compatible model...thanks for any help.
qrz:
post the number off the fly and will search to find what subs may be available ( if any ? )
qrz
gokun:
--- Quote from: qrz on May 18, 2008, 10:19:22 pm ---post the number off the fly and will search to find what subs may be available ( if any ? )
qrz
--- End quote ---
There is a white sticker over the main sticker which reads: model #: 1138
it is on top of what looks like the factory sticker...but after 11 years I don't think it's coming off without a fight...but if it helps, the chasis specs are on rodotron.com.tw (it's the ch-288)...is that helpful or should I keep looking? Let me know; thanks!
[EDIT]
Ok, according to info I found on another website, these things pretty much all use a MHF023-45 flyback. That should hopefully be a little more helpful. :)