Sharp model 25A-S100 Vertical output chip NTE7039
In the past TV had intermitant vertical problems, resoldered pins 13,
12 and 11 on NTE7039, good for two years. Now have just horizontal line acroos screen. No schematic. Questions Pin 8 pump-up output, does the chip supply that Voltage or another circuit? Pin 2 is this 4.45V over driving the trigger, cause of failure? Pin 13 Where does this Voltage come from? I can order a NTE7039 for $10.00. Just not sure if it's the NTE7039
Thanks for any info
pinout My readings data specs
1 +VCC1 10.29 V 8-14 V
2 Vertical trigger input 4.45 V Max 3.2 V
3 time constant 5 V
4 Vertical amp control 5.2 V 5.9-6.3 V
5 Vertical size control -.004
6 Ramp generator 4.96 V
4.6-5.2 V
7 Vert out AC/DC feedback -.006
8 +Vcc8 -.282 V 10-27 V
9 pump-up output -.208 V
10 OSC stop -.001 V
11 Grnd
12 vertical output -.004 V
13 Power supply for vertical output -.004 V Max 62 V
Features:
Low Power Dissipation due to On?Chip Pump?Up Circuit
On?Chip 50/60Hz Vertical Size Control Circuit
On?Chip Sawtooth Wave Generating Circuit
On?Chip Drive Circuit
Vertical Output Circuit
On?Chip Thermal Protection Circuit
Excellent Interlace Response
Excellent Crossover Response
Recommended Operating Conditions: (T A = +25....C unless otherwise specified) Parameter Symbol Min Typ Max Unit Driver Supply Voltage +V CC 1 8 12 14 V Pump?Up Supply Voltage +V CC 8 10 24 27 V
Absolute Maximum Ratings: (T A = +25....C unless otherwise specified) Driver Supply Voltage, +V CC 1 max 15V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pump?Up Supply Voltage, +V CC 8 max 30V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output Supply Voltage, +V CC 13 max 62V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Deflection Output Current, I DEF ?1.5 to +1.5A P?O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermal Resistance, Junction?to?Case, R thJ?C 4....C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Allowable Power Dissipation (With Infinite Heat Sink), P D max 8W . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Temperature Range, T opr ?20.... to +85....C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature Range, T stg ?40.... to +150....C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .