Changhong HD color TV CHD29166 can boot but silent without map failure repair - android - Phones Developers

Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM

Imported spot passive patch crystal oscillator 3225 2520 16.000MHZ

Today, I received a ministerial CHD29166 HD color TV.
The fault is: power on, can be turned on (there is a boot action), but there is no sound (no high voltage), and it will not automatically standby protection. After dismantling and checking, it is found that the machine is a rework machine, and the drive is not seen, find a 2SC2483 installed, still ineffective, measuring stacking tube B is extremely 0.7V, C pole 1V, saturated, vines touched the 8 feet of the TDA9332H on the HD board, disconnected the B pole, still high (8V), JD is judged to be damaged, quickly replaced, checked correctly, turned on, has high-pressure sound, psychological ecstasy, but only 5 seconds When the picture comes out, it is full of flowers, as shown in Figures 1, 2, 3, and 4, the psychological is not cold, because it has been encountered before, there are also people on the forum, and carefully measure the voltage of each channel 1.8V. 2.5V, 3.3V, 5V, 8V, 12V all normal, evil door? ? ? I calm down and drink a glass of water, and then slowly study, first check the TDA9332H peripheral circuit and the voltage of each power supply pin is basically normal, the bus clock of 10 feet and 11 feet has a jump of 4V, the replacement of 12.000M crystal oscillator is also invalid, and then the former repairer After checking the location, I found out that the problem was that the two feet that entered the HD board were soldered together. The motherboard was labeled SCLO and SDAO, and the HD board was labeled SCL2 and SDA2. Separately connected with CPU: OM8370PS/N3/A 1 pin and 8 pin, re-weld, boot, normal screen finally appears, but no sound, at first glance, the sound amplifier is blown into two halves In other words, the fault was completely repaired and analyzed afterwards. It turned out that the machine had another data to transfer signals between the CPU and the HD board. I ignored it. If the signal is missing, the screen will be repaired. I will write it out and hope that it will be in the future. Have a little help for everyone, and then pass some relevant extra photos 5, 6, 7 pictures can not be uploaded, the picture is almost the same as this: http://