飞利浦philips 29PT8319/93R 开机后保护红灯闪四下是什么原因?

wuyunhong

飞利浦philips pt7319/93r因天气潮湿打火后，自动关机，开机后有高压声立即保护，红灯闪四次，过几秒再闪四次，这是什么原因引起保护？急！！！

天天泡坛子

一般是场保护

wuyunhong

是一sbb板有问题的

东莞极地联盟

误码4代表是5V保护，基本可以断定是SSB板有问题。
- m$ r2 S  L2 a- s6 Q       
自己看下手册的说法：
$ M4 j" b; m" p' ?: H; p       

       
Error 4
! v9 B. K8 i3 n# h2 e% QWhen the +5 V protection is active, the set is switched to
protection and error code 4 is placed in the error buffer. The
LED will blink 4 times (repeatedly). A 5 V failure can cause
& y6 F; ]# \* ~2 |; j$ q. ya drop in the 5 V supply output, resulting in an undefined
behaviour of the set. Therefore, some I2C devices (Tuner
and MSP) connected to the 5 V supply are constantly
5 g- p  N$ \" w2 bmonitored. When none of these devices responds to the
micro controller for a prolonged time, the micro controller
assumes that there is a failure in the 5 V supply. By starting
up the set via grounding of the FRONT_DETECT-line (on the
$ A0 ]; g, P; i) M/ G2 \side I/O), the +5 V protection will be overruled and it will be
easier to determine the cause. The +5V protection will be
$ H- r: @: L/ V, u! `0 p# B/ dactivated when these I2C devices fail (no I2C
3 T1 }! j' _  r7 F0 x4 k9 qcommunication):
– Main Tuner (pos. 1200 on the LSP),
– MSP34xx sound processor (pos. 7651 on the SSB).

孙坚

就是场保护