Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.repair,sci.electronics.equipment,alt.engineering.electrical
|
|||
|
|||
Loose connect makes picture move on CRT
Can you help me locate the area on the circuit board which is
causing an intermittent fault on my CRT monitor. I would welcome some help to work out which part of the circuit board is a candidate to specifically try the next time it happens. It is a Tatung Mitsubishi V70. Model VM71RDA. (17inch) ------ HERE ARE THE DETAILS This fault causes the picture to move vertically. This might happen only once every two days or it may happen maybe four times in a day. The bottom of the picture will go up by about 1 cm and the top will correspondingly come down by approximately 1 cm. I notice that the picture at the top and bottom edge is no longer "linear" but appears squashed: I can see the small icons in XP's Quick Launch bar looking all squeezed up. This effect may not be stable and it may move into and out of this squashed state every half second or so. I can't help but think that the effect is partly linked to what is on the screen as (I may be hallucinating) there seems to be a co- incidence sometimes between the start of some screen activity and this fault starting. --- I have removed the rear cover and settled the monitor on the desk. There is a single large circuit board. I find that if I randomly (!) press the circuit board (with a length of plastic for safety) then I can get usually this fault to settle down and go. I move the board at random because I can not tell where this problem is located. I imagine there is a crack or bad joint or something. Sometimes I fancy that moveing the heavy thick signal cable is helping but I think doing this is really flexing the board. Can you help me identify which component or which area of the circuit board is a candidate to specifically try the next time it happens. |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Slightly distorted picture. | Electronics Repair | |||
TV makes a chirping sound which gets louder when the picture gets brighter | Electronics Repair | |||
Try this Gunner | Metalworking | |||
Sony KV-32XBR48 picture blinks on and off | Electronics Repair | |||
Philips tv with no picture or disapearing picture or slow picturestartup but good sound?? | Electronics Repair |