I would like to repair an Icom 735 that is not able to receive from 4
to 11 MHz. Two diodes (D11 & D13) in the receive bandpass filter
section are blown (due to operation near another high power
transmitter/antenna).

These diodes are on the main board which can be accessed by removing
the bottom cover. However they can only be replaced by
unsoldering/soldering on the bottom of the main board. I have several
questions for anyone who has made repairs to this rig:

1. It is easy to remove the screws holding down the board but there is
extensive wiring connected to this board. Does the board have to be
totally removed in order to get at this area? How difficult is this
job? Any tips or tricks you might recommend?

2. The diodes are 1ss53 which is a Japanese switching diode. They are
hard to find. Has anyone found a direct replacement for this part that
gives equal or better performance? (I do not want to change any of the
bias resistors).

Thanks - Roger