Electronics Forum / Repair / November 2003

I hardly try to find a schematic for the
Acer 7299c (AcerView 99c) monitor.
Is anyone there who can help me?
Thanks alot!

M51517L is a dual audio power amp IC used in car radio amplifiers. Anyone
know what it's equivalent to or where I can download a datasheet?
I've tried the usual suspects.
Thanks,

Hi , I have a projection TV RCA Model P46732 (CTC169) with a major
convergence problem...
Somebody had played with convergence pots (~75 pots) , and now the pic is
worse than before.

Just a note in hopes it may be helpful to other beginners who want to make
CDs.
I'm an old geezer who doesn't know beans about CD making.  First, I  had to
learn how to download music.  To do that, I asked the experts, and got some

This tuner have some soldered ~4 mm diam. indicator-lamps (for FM/MW/LW)
with green elastic sleeves.
What is the voltage and current for the lamps?
Thanx in advance

I have a Panasonic P70 monitor. It is a good one.
After a repair (the green cannon went south) the monitor
shows some shadow effect on the horizontal plane.
I sent it to two technicians, the original one and a very trusted

The picture on this monitor has shrunk to only a vertical line in the
center - about 1/4" wide.  Prior to that, it would sometimes get
darker than normal, but brightness would return if I gave it a rest.
I can handle a component replacement, but outside of VOM have no other

My 1990 Panasonic PV-7000 VHS VCR expired
unnoticed recently. No front panel lights, no
on/off possible. It worked fine several weeks
ago.

I'm trying to sort out a tuning problem with a philips 28pw6005 tv.
there are no problems with AV inputs, but the picture through the
aerial is very weak - it just about picks up a signal (poor picture
with ok audio) from the cable box, ie the strongest signal. Its not

I have a 7yr old (Mfd: 8/96) Panasonic TV model CT-27G11U that seems to
sporadically shut down.  There is no popping noise or video changes prior to
shutdown.  After shutdown it will not power on again for several seconds.
Some days it will shut down several times after varying ...

Can anyone help me out with fixing a fault on this projector. The
projector powers up fine and works for approx 5 minutes then shuts
off, fans still run then the light comes back on after approx 2 mins
and it goes through the cycle again. The bulb is fine and has been

Where I can find such for my Finnish "region" TV set?
BR24C04 is not fully compatible, but it works... I have tried
I have now X2404P to replace original X2404M , but it might have been
programmed incorrectly. Picture is only black and white lines.

I found a description of a series light bulb circuit on the net at
http://www.vintage-radio.com/projects/lamp-limiter.shtml
and there's a statement which confused me a bit:

Would like to have a feature that times the mute button action for say 60
seconds or 90 seconds
you press it and mute lasts for that long and then sound is back on
I have searched the net and found nothing of the sort in existence

Have a sony 5 disc of the model mentioned above that won't play. When the
discs are in, it cycles through them and won't recognise any of them. Took
it apart to see what was going on and it appears the discs are mounting
okay, but the player turns them at a slow, intermittent pulse, ...