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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. |
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#1
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KP41EXR96
Looking for the values of parts location R1728 R1812 Both on Convergence board ![]() Thanks Much I think they are 1.ohm ? kip -- "Watch the return E-Mail addy its false" |
#2
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From memory: only take it ½ way to the bank.
This unit has the convergence up front right ? If so read on. The only resistors it usually burns up are lil fuzibles or the yoke return resistors. The lil fuzible resistors aren't real critical, basically anything that goes off at the same current will do, but if they are yoke return resistors they are critical. They set the gain of the output stages and as such, if you change their value(s) you must do an unnessecary realignment on the convergenge. Look at the PCB, do they go between the Cyoke return and ground ? If so they are yoke returns and thus I would rather use used parts from a scrap board than a generic replacement. They must be non-inductive. Not sure if they're metal film or what, but they are not $0.13 resistors. They need to be accurate to the original value. The fuzibles really don't matter, it'll blow the 3.15 amp fuses before it cooks the SMPS, but it might cook a convergence yoke. There are six channels of output on that board, you just duplicate the values from another channel. JURB |
#3
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From memory: only take it ½ way to the bank.
This unit has the convergence up front right ? If so read on. The only resistors it usually burns up are lil fuzibles or the yoke return resistors. The lil fuzible resistors aren't real critical, basically anything that goes off at the same current will do, but if they are yoke return resistors they are critical. They set the gain of the output stages and as such, if you change their value(s) you must do an unnessecary realignment on the convergenge. Look at the PCB, do they go between the Cyoke return and ground ? If so they are yoke returns and thus I would rather use used parts from a scrap board than a generic replacement. They must be non-inductive. Not sure if they're metal film or what, but they are not $0.13 resistors. They need to be accurate to the original value. The fuzibles really don't matter, it'll blow the 3.15 amp fuses before it cooks the SMPS, but it might cook a convergence yoke. There are six channels of output on that board, you just duplicate the values from another channel. JURB |
#4
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Ok Thanks very much for the info sure appreciate it.
kip -- "Watch the return E-Mail addy its false" "JURB6006" wrote in message ... From memory: only take it ½ way to the bank. This unit has the convergence up front right ? If so read on. The only resistors it usually burns up are lil fuzibles or the yoke return resistors. The lil fuzible resistors aren't real critical, basically anything that goes off at the same current will do, but if they are yoke return resistors they are critical. They set the gain of the output stages and as such, if you change their value(s) you must do an unnessecary realignment on the convergenge. Look at the PCB, do they go between the Cyoke return and ground ? If so they are yoke returns and thus I would rather use used parts from a scrap board than a generic replacement. They must be non-inductive. Not sure if they're metal film or what, but they are not $0.13 resistors. They need to be accurate to the original value. The fuzibles really don't matter, it'll blow the 3.15 amp fuses before it cooks the SMPS, but it might cook a convergence yoke. There are six channels of output on that board, you just duplicate the values from another channel. JURB |
#5
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Ok Thanks very much for the info sure appreciate it.
kip -- "Watch the return E-Mail addy its false" "JURB6006" wrote in message ... From memory: only take it ½ way to the bank. This unit has the convergence up front right ? If so read on. The only resistors it usually burns up are lil fuzibles or the yoke return resistors. The lil fuzible resistors aren't real critical, basically anything that goes off at the same current will do, but if they are yoke return resistors they are critical. They set the gain of the output stages and as such, if you change their value(s) you must do an unnessecary realignment on the convergenge. Look at the PCB, do they go between the Cyoke return and ground ? If so they are yoke returns and thus I would rather use used parts from a scrap board than a generic replacement. They must be non-inductive. Not sure if they're metal film or what, but they are not $0.13 resistors. They need to be accurate to the original value. The fuzibles really don't matter, it'll blow the 3.15 amp fuses before it cooks the SMPS, but it might cook a convergence yoke. There are six channels of output on that board, you just duplicate the values from another channel. JURB |
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