Old color electricity adjustment mid-week monitoring point quick look-up table - Power Circuit - Circuit Diagram

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The color TV "no signal method" was adjusted to the middle of the week and has been recognized as the "best plan". This method has been effective in the implementation of various types of color TV maintenance.

Non-I2C bus color TV produced in the early 90s and before. In the middle of the week, the capacitor is oxidized to make the capacity smaller and detuned. Affected the viewing effect. There are dozens of models for the image of these color TVs and the sound-detecting circuits in the accompanying sound. It is impossible to remember all the detection points (AFT voltage output pin) when adjusting the middle week, so this "quick monitoring point monitoring table" is drawn, which is very convenient to use, and now it is introduced to the peers.

In the eighth issue of 2002, we published the article of Mr. Zhou in the article. Write in bold type: "Adjust the two midweeks repeatedly without signal. Let the AFT voltage have the maximum value. At this time, the image detection is adjusted in the middle of the week; then adjust the AFT midweek to return the AFT voltage to 6.5V. at this time in weeks AFT also align. "I was in a TV repair JVC 7695 Taichung. The core of the AFT mid-week is fully applied, and the voltage is also less than 6.5V (actually 7.2V), but the fault no longer exists. Mr. Zhou’s statement that “AFT voltage is adjusted back to 6.5V” is for further demonstration. In fact, the same type of integrated circuit is used on different models, and the AFT voltage is different. Therefore, the AFT output voltage is also plotted in this table. For reference during the middle week.

Serial number (type) integrated circuit model monitoring foot voltage (V) 1 Hitachi NPSCHA11215A165.82 Hitachi NPSOCHA11440R84.83 Hitachi NP82CHA11440B84.84 Hitachi NP82C20HA11485BNT16.55 Hitachi CTP2205HA11485BNT15↓6 Panasonic M11AN513266.77 Panasonic M12AN513266.78 Panasonic M14/15AN5138103.79 Toshiba X-53/56PTA7607AP66.510 Toshiba two pieces TA7680AP136.311 victory X53PTA7607AP66.312 victory X56PTA7607AP66.613 victory two pieces TA7680AP138.514 Sanyo 79CPLA1357N105.615 Sanyo 80CLA1357N105.216 Sharp NC-ITIX0388CE245.417 Sharp NC-IITIX0388CE246.918 Sharp C -3700CEIX0464CE245.119 Sharp C-1803CEIX0261CE244.420 Sharp two pieces AN7680AP135.721 Lu's two pieces AN7680AP136.522 NEC TAμ two pieces AN771046.523 日电CV-14TTA7607AP56.124日电 CT-1803PDM51346P125.0↑25Sony XE- The legislation 18DSLA7520175.527 3CX20015A5026 Europe Kang Yi Kang Yi KTNS145TA7680A138.128 T7701 / 7751BAN5150N125.629 South-NC-9321TA7680AP136.330 on the South NA14PDTA7607AP56 ↓ 31 music DCS-405MEAN7680AP136.532 beauty EC206 / 2061RTA7681AP136.533 Beijing 83818308TA7607AP56.634 Shanghai Z247-1ATA7607AP56 .835 Shanghai Z247-5AD7680CP135.536 Shanghai Z64 17-1BTA7607AP52.6↓37金星C478HA11485BNT15.638金星C512D7680AP137.239金星C542D7680AP137.440金星C4712HA11440A86.841金星C4718TA7680AP138.642乐华TC511CD513265.643乐华TC541TA7680AP139.844海虹56emTA761156.745海虹HH2063RTA7681AP136.846九华CD1401TA761156 .347 Prima XT5101TA7680AP136.448 new KG5168-2TA7680AP137.149 Jiangxi Jinggangshan of Jiangxi new KG5401TD7680AP136.950 CJ5401TDA7680AP135.751 Jinggangshan CJ471TA7680AP135.7552 peony 47C4AN513264.653 Veuve 4C-4701IX0718136.554 Panda DB47C4D7680AP136.755 Huari C513TA7681AP13756 wishful 4103TA7680AP134 .557 ring word 47C2D760755.2 ↑ 58 happy HC2063RTA7680AP136.2 ↑ 59 Konka KK-T920BTA7680AP136.6