MartinPickering
Prominent Member
Gavtech already did. You even copied his suggested list into your post!
Please replace those capacitors and report back.
Please replace those capacitors and report back.
Now he is reporting that with only the aerial 'input' cable plugged in, he gets a relatively low level, but still usable signal. However, when the loop-through to the TV is then also plugged in, the signal on the Panny drops off and is unusable, as if it is being loaded somehow.
He lives away, but is coming for a visit soon, bringing the machine with him, so I'll only have a few hours to look at it
Welcome to the forum.Hello all. Pleased to find this forum with the chance of fixing my DMR- EX75. On plugging it in the clock was flashing 00.00 and after resetting it, no tv stations were found and in 'Set up' the 'Signal' was greyed out - no problem with the tv. The clock time would not hold if the power was switched off. Trawling through these pages, this appears to be a common fault which may be fixed by replacing the 680uf capacitor (C1533) on the main board below the green ic board in the centre. All the capacitors appeared to be OK with just a slight doming on the C1533.
I replaced C1533 by snipping off the legs on it, reducing the legs on the new one to about 10mm and poking them down the holes against the existing legs, before soldering and bending it slightly to clear the underside of the green board. Fairly easy to do - the ribbon cables on the green board are easily pulled out with the strips fixed to them, so no need to tug at the ribbon itself. Much to my dismay, this 'fix' did not work and the fault is still there.
Looking through your posts, C1530, 1502 and 1508 are mentioned, but I do not appear to have these on my board and the nearest I have are C1516 and 1518. I am thinking that perhaps the fault is due to a 'dry joint' on one of the legs on the main board and by soldering the new capacitor on, it has done nothing to improve it? Before going to the trouble of removing the main board, I would very much appreciate the advice of anyone with more knowledge than myself- which is very little!
Welcome to the forum.
You need to take out the central so called digital board to find C1530.
It is underneath it.
I think you must be mistaken about C 1502 and 1508 numbers.
There is no C1502 in this machine ... and C 1508 is a chip capacitor.