On Sep 4, 12:57*pm, b wrote:
Should have been an easy repair, this.
TV is a mid 90s MAGNUM 5520 VT, *PT2 CHASSIS . A supermarket (german
Aldi) special I believe.
It came to me a couple of years ago with sound but no picture.
Increasing g2 gave thin horizontal line, frame collapse.

changed the IC, *a new TDA 3653B (which is now fitted.)
checked/replaced all the components in the supply to the frame chip
(TDA 3653B). +26V rock solid on pin 6 and 9.

(FYI;: frame chip data:http://www.datasheetcatalog.com/data...TDA3653B.shtml
TV PT2 schematic :http://www.eserviceinfo.com/download...7/_Magnum.html
)

the problem is still the same. checked key resistors near IC, all in
spec.
now , question is how to check for vertical impulses without a scope.
It could also be the new IC was duff, but will pursue other avenues
first. I am also beginning to think that last time I opned this et 2
yrs or more ago, *I may have put in a TDA 3653B in place of a TDA 3653
- not sure what was originally there and I may have got paranoid, not
sure how critical this is anyway.
*In any case, the tv schematic and the TDA 3653B do not seem to tally
too closely pinouts.

would appreciate any ideas.
reards, B

borrow a scope!