Below if in uses our product to encounter the situation: Please refer to the solution

一、 the lamp is not bright:
1. Does the zero Europe resistance have the vacation to weld or bad (avonmeter measured general rule is good).
2. Does the inductance badly have (general small inductance quite many to be bad) the avonmeter Measured the general rule is good.
3. Measured 3U short-circuits (namely 4.7UF not to short-circuit), if with then earnestly observes All 0.1UF electric capacity, namely CPU links 3V the line.
4. Resistance between does the crystal oscillator have the mistake, short-circuits, the vacation welds as well as side two 20P electricity fault-tolerant, the vacation welds does not have.
5. Transfers the attachment to have the vacation to weld (very frequently), as well as the triode short-circuits with the side 10K resistance Not (quite common), but also some 470 ohms, the 1K resistance is wrong, the supposition has.
6. The host controls finally two feet to short-circuit does not have, the vacation welds (quite has been uncommon).

二、 Cannot find the installment: First the lamp is bright, therefore front starts partially generally all is normal, the question leaves in the host controls as well as on CPU Quite many, but also has the common electric capacity (0.1UF) the vacation, wrong welds, is possible the appearance. The lamp dodges does not stop:
1. Transfers the attachment vacation to weld, the triode vacation welds, electricity fault-tolerant.
2. Under the switch and CPU short-circuit, the switch following electric capacity and CPU short-circuits, the host controls as well as the CPU vacation, short-circuits (Special host controls 15, 16 feet).
3.3.9 ohms resistances vacations, wrong weld. The capacity wrong question generally appears on CPU, for instance the vacation welds, short-circuits, perhaps CPU bad. More questions please Email: Jandahp@janda.com.cn