The HOT was blown and the replacement blew instantly. If there is a pot for adjusting the Hor hold, then adjusting that might help since it might not be optimum. or Vert sync? If hor, check components around the Hor Osc of TDA4850 and check components around Vert Osc if Vert sync problem. In the deflection circuit found TDA4850 (and TDA4861), TDA2595, HEF4528BP and a 74HCT86N. P1015-2: Philips 4CM4770 monitor intermittently out of sync. To remove the old IC without lifting PC traces, it is best to cut off each pin, If the output voltage from pin 22 of the CXA1907S is too low, going to IC407, this will cause low G2 voltage. Is there ashows protection circuit that shutschassis, it down? Assuming that your Dell'sisFCC number that itcontrol is a Sony GDM20E03 the probable cause is a defective IC, CXA1907S, on the CRT board, Sony part# 8-752-071-56. ![]() We found a low G2 voltage, the G2 control transistor ok. P1023-2 Dell D2026T-HS monitor is very dark (only can shows the OSD). If so, before powering up, also check D404 and T404. ![]() I am getting the correct pulses on the base of it but still no H.T. Now on turn on, there are power supply voltages but nothing on the collector of the hot. This information is intended to be for the individual, private use of all visitors to this site. The content of these pages is copyrighted by AnaTek Corporation 1994-2002. Computer Monitor Repair - Archived Files Updated 3/1/02 All questions and answers posted here become the property of AnaTek Corporation
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