GDT-292A, 293A, 294A, & 295A Fuse Replacement

GDT-292A assembled showing 3 red insulatorsRecently we had a customer request information and instructions on how to replace the fuse inside the GDT-292A. These instructions will also work for the other versions of the meter: GDT-293A, 294A, & 295A. This is an older multimeter that we no longer manufacture, but we would still like to make people aware of how to replace the fuses safely without altering the multimeter in a way that could make using it dangerous. Luckily for us the customer was able to supply these pictures for others who may need help in the future.

To replace the fuse(s) open the case as previously mentioned in the manual, and remove the Printed Circuit Board (PCB) from the front cover by ONLY removing the four larger screws that are located toward the top of the meter and that are spaced to form a rectangle. The PCB and cover will now be able to separate easily.

 

5, What should be seen after PCB removal

DO NOT LOOSEN OR REMOVE THE FOUR SMALLER SCREWS THAT ARE LOCATED TOWARD THE MIDDLE/BOTTOM OF THE METER AND ARE SPACED 4 CM (approximately 1 1/2 inches) APART AND FORM A SQUARE.

 

 

 

 

 

 

 

 

 

(These four smaller screws marked in yellow in the above image hold the rotary switch in place.) DO NOT REMOVE THEM!

6, Fuses sitting on top of holders'For protection against fire or injury the fuse(s) should be removed without causing damage to nearby components and should only be replaced with fuse(s) of the same specified voltage and current ratings as specified in this Operator’s Manual.

7, Fuses removed for testingRefer to the two photos above. One black and three red rubber insulators surround the four jacks that the leads can plug into. The insulators are held in place against the PCB by the front cover. Upon dis-assembly one or more of the colored insulators may get stuck in the cover (in this dis-assembly one red and one black insulator were stuck to the cover). For ease of re-assembly, the stuck insulators can easily be pressed out of the cover and put into place on the PCB (wide end toward the PCB) as the two red ones in these photos are. Just remember, the BLACK rubber insulator goes on the post of the PCB labeled “COM” (of course). These insulators ensure a snug fit of the leads without using split-tip leads that lose their tension over time.

Fuse & Test Lead information for obsolete and current meters.

Meter Fuses and Leads
Model Available Leads Fuse NOTES
530 OBSOLETE F-4 F-6
3005 OBSOLETE NA
3021 OBSOLETE NA
3121 OBSOLETE NA
3122 OBSOLETE NA
3123 OBSOLETE NA
3124 OBSOLETE NA
3125 OBSOLETE NA
3131 OBSOLETE F-22 F-25
3165 OBSOLETE NA
3166 OBSOLETE NA
3301 OBSOLETE NA
3302 OBSOLETE NA NO TEST LEADS AVAILABLE
3315 OBSOLETE NA
4102 OBSOLETE NA
4105 OBSOLETE NA
6017 OBSOLETE NA
6030 OBSOLETE NA
6300 OBSOLETE NA
3001B OBSOLETE NA
3132MOV OBSOLETE NA
3135P OBSOLETE F-8 F-11
3322A OBSOLETE NA
620C OBSOLETE F-7 F-12
ADM-18 TL-42 F-27
ADM-28 TL-42 F-22 F-25
ADM-88 TL-42 F-21 F-20
AV-1A OBSOLETE NA
CM-201 OBSOLETE F-16
DM-10 TL-42 NA
DM-1000 OBSOLETE F-14
DM-12 TL-42 F-2
DM-2000 OBSOLETE F-14
DM-210A TL54
DM-3000 OBSOLETE F-14
DM-3010 TL-42 F-11
DM-350A TL54
DM-360A TL54 F-7
DM-370A RL54 F-7
DM-4000A TL-42 F-17
DM-4100A TL-42 F-17
DM-4300A TL-42 F-17
DM-4400A TL-42 F-7
DM-5300 TL-42 F-24 F-25
DM-6100 TL-42 F-20 F-22
DM-6200 TL-42 NA
DM-6200 (OLD) TL-42 F-20 F-22
DM-6250 TL-42 NA
DM-6300 TL-42 F-20 F-22
DM-6400 TL-42  10 Amp  1 Amp
DM-6450 TL-42 10 Amp 1 Amp
DM-6500 OBSOLETE F-13
DM-6510 TL-42 F-14
DM-6600 TL-42
DM-6650T TL-42
DM-6910 TL-52 F-14
DM-7010 TL-42 F-11
DM-7100 TL-42 F-23 F-7
dm5300 TL-58 f24,f25
DM-7A TL-42 F-24
DM-8010 TL-42 F-14
DM-8100 TL-42 F-20 F-21
DM-8200 TL-42 F-20 F-21
DM-8300 TL-42 F-20 F-21
DM-8400 TL-42 F-21 F-20
DM-8500 TL-42 F-20 F-21
DM-8600 TL-42 F-20 F-21
DM-8700 TL-42 F-21 F-20
DM-8A TL-42 F-22 F-25
DM-9100 NA F-29 F-30
DM-9500 TL-42 F-7 F-26
DM-9A NA F-2
DP-300 OBSOLETE F-8
DP-306 OBSOLETE F-10
DP-310 OBSOLETE F-8
DP-316 OBSOLETE F-10
DSA-1000 OBSOLETE NA No battery or charger available.
DSA-1001 TL-52 NA
DSA-1003TRMS TL-52 NA
DSA-1010 TL-42 NA
DSA-1020TRMS TL-42 NA
DSA-2002P TL-42 NA
DSA-2002R TL-42 NA
DSA-2003 TL-42 NA
DSA-2007 TL-52 NA
DSA-2007A TL-52 NA
DSA-2009 TL-42 NA
DSA-2415 TL-42 NA
DSA-400 TL-52 NA
DSA-440 TL-52 NA
DSA-440T TL-52 NA
DSA-450TRMS TL-52 NA
DSA-500A TL-42 NA
DSA-540A TL-42 NA
DSA-600 TL-42 NA
DSA-600P TL-42 NA
DSA-650TRMS TL-42 NA
DSA-660 TL-42 NA
DSA-680TRMS TL-42 NA
DSA-700 TL-52 NA
DSA-710 TL-52 NA
DSA-720 TL-52 NA
DSA-730 TL-52 NA
DSA-740 TL-52 NA
DSA-750 TL-52 NA
DSA-760 TL-52 NA
DSA-7610 TL-42 NA
DSA-770 TL-52 NA
DSA-780 TL-52 NA
DT-40A OBSOLETE NA
EZ-6111 OBSOLETE F-8
EZ-6221 OBSOLETE F-8
GCM-221 RTL-200
GCM-306 OBSOLETE GF0306
GCM-307 OBSOLETE
GCM-500 RTL-200
GCM-600 RTL-200
GCM-620 RTL-200
GDT-190 RTL-103 F-14
GDT-192 NA GF2050
GDT-193 NA GF2050
GDT-194 NA GF2050
GDT-200 RTL-103
GDT-292A RTL-200
GDT-293A RTL-200
GDT-294A RTL-200
GDT-295A RTL-200
GDT-311 RTL-300 NA
GDT-3190 RTL-300 NA
GDT-3200 RTL-300 NA
GDT-820 NA
GDT-830 NA GF2050
GMT-17 NA GF017P
GMT-312 RTL-108
GMT-318 RTL-108
GMT-319 RTL-103
GMT-41 RTL-103
HSP-10A TL-34 F-7
HSP-5A TL-34 F-16
OHM-150 OBSOLETE NA SNAP 6
OHM-300 OBSOLETE NA SNAP 6
OHM-525 OBSOLETE NA SNAP 6
SDC-701 OBSOLETE NA SNAP 7
SDM-410 OBSOLETE F-7
SDM-460 OBSOLETE F-7
SJ-100A OBSOLETE NA
SJ-50A OBSOLETE NA
SP-10A TL-34 F-7
SP-152A TL-56 F-7
SP-142  OBSOLETE 500MA
SP-15A TL-34 F-7
SP-160 OBSOLETE F-1
SP-170B TL-56 F-18
SP-250B TL-56 F-19
SP-5A TL-34 F-16
SP-6A TL-34 F-16
SPM-2011 OBSOLETE NA
SPM-2012 OBSOLETE NA
SPM-2012 OBSOLETE NA
SPR-1030 OBSOLETE NA SNAP 10
SPR-300+ TL-52 F-1
SPR-311 OBSOLETE F-1 SNAP 8 PLUS
SPR-931 TL-42 NA SNAP 9
SR-150 OBSOLETE NA
SR-150 OBSOLETE NA SNAP 5
SR-25 OBSOLETE NA SNAP 5
SR-300 OBSOLETE NA SNAP 5
SR-50 OBSOLETE NA SNAP 5
TD-2608 TL-52 F-1
TD-6 OBSOLETE NA
Fuse Specs
Part Number Size Voltage Amperage Description
F-1 1/4″x 1 1/4″ 250V .5A fast acting, glass
F-2 5mm x 20mm 250V .1A fast acting, glass
F-3 1/4″ x 1 1/4″ 250V .1A fast acting, glass
F-4 1/4″ x 1 1/4″ 250V .02A fast acting, glass
F-6 1 3/32″X 1 1/2″ 600V .25A Bussman KTK
F-7 5mm x 20mm 250V .5A fast acting, glass
F-8 5mm x 20mm 250V .3A fast acting, glass
F-9 1/4″ x 1 1/4″ 250V .25A Cold resistance
F-10 5mm x 20mm 250V .75A fast acting, glass
F-11 5mm x 20mm 250V 2A fast acting, glass
F-12 1/4″ x 1 1/4″ 250V 1A fast acting, glass
F-13 6.4mm x 30mm 250V .5A Arc Quenching Silicon Filter
F-14 5mm x 20mm 250V .2A fast acting, glass
F-15 6mm x 30mm 250V 2A fast acting, glass
F-16 5mm x 20mm 250V .25A fast acting, glass
F-17 5mm x 20mm 250V .8A
F-18 6.35mm x 30mm 250V .5A fast acting, glass
F-19 5.2mm x 20mm 250V 1A fast acting, glass
F-20 13/32″x 1 1/2″ 600V 20A Bussman KTK
F-21 6.3mm x 25mm 600V .5A Ceramic
F-22 5mm x 20mm 250V .5A Fast acting, ceramic
F-23 1/4″ x 1 1/4″ 600V 10A Fast acting, ceramic
F-24 1/4″ x 1 1/4″ 600V 2A Fast acting, ceramic
F-25 1/4″ x 1 1/4″ 600V 10A Fast acting, ceramic
TL-42, TL-52, TL58 leads are interchangeable.
Best locations to send customers for fuses is Parts Express 1-800-338-0531 http://www.partsexpress.com or Newark 1-800-463-9275 http://www.newark.com
We do not have any cases available for the testers.
We have no replacement parts available for the testers.  If the unit is in need of repair, contact http://www.daviscalibration.com or http://www.transcat.com for closest locations.
For Gardner Bender Test leads, http://www.acehardwareoutlet.com stock them.  For Sperry test leads http://www.delcity.net has them.We do not have the charger or batteries available for the DSA-1000 clamp meter.The specs for the SBC-1 charger are 9 VDC 25mA

Battery Type by Product

Product Number Battery Type Quantity
CAM-10 LR-44 2
GCV-3206 LR-44 2
GCT-3304 AAA 2
GVD-3504 AAA 1
GVD-3504 LR-44 2
GET-4220K TRANSMITTER AA 2
GET-4220K RECEIVER LR-44 4
GET-4110K TRANSMITTER AA 2
GET-4110K RECIEVER LR-44 4
GMT-312 AA 1
GMT-318 AA 1
GMT-319 AA 2
GDT-311 9V 1
GDT-3190 9V 1
GDT-3200 AAA 2
GCM-500 AA 1
GCM-221 AAA 2
GVC-1000 AAA 3
GCT-204 AAA 2
GFT-200 AA 2
GVD-504A LR-44 2
GVD-505A LR-44 2
GPD-902 9V 1
GVC-300 LR-44 2
GET-207 A27(12V) 1
GCV-206 LR-44 2
GET-1200 9V 1
GMT-12 AA 1
GMT-18 AA 1
GMT-19 AA 2
GDT-185 LR-44 2
GDT-190A 9V 1
GDT-200A 9V 1
GDT-292A 9V 1
GDT-293A 9V 1
GDT-294A 9V 1
GDT-295A 9V 1
GCM-500 AA 1
GCM-221 AAA 2
GCM-600 9V 1
GCM-620 9V 1
GSS-510A LR-44 4
GSS-500A LR-44 4
GCT-304A AA 2
GAT-503 AAA 1
GVD-504LV LR-44 2
GAT-550 LR-44 2
GMT-41P AA/9V 1 EACH
GET-4100R 9V 1
GET-4100T 9V 1
GET-4000 9V 1
GET-4010 9V 1
GET-4040 9V 1
GET-6000 9V 1

Continuity Measurements.

Any multimeter with the ability to test resistance or ohms can measure for continuity. Some meters have an audible buzzer to let you know when you have continuity, while others don’t. You need to keep an eye on the display to watch the reading the tester is giving. Most analog testers you have to watch the screen to see if the needle goes all the way to the right. With the digital meters, some have an audible symbol to let you know if the meter has an audible buzzer or not.
This is the audible continuity buzzer. In most cases, if the reading is under 50 ohms of resistance, the meter will buzz. With other testers, you would just select any of the resistance ranges (Ω) and watch the reading you get on the screen. It should be as close to 0.00 as possible to have the best continuity. Most times you will get something between 0.00 and 0.3 on the display because the meter is picking up resistance in the circuit being tested and in the test leads.
WARNING!!! ALWAYS TEST CONTINUITY ON A CIRCUIT THAT IS SHUT OFF. A live circuit will damage the tester and potentially injure the user.

Old & Current Tester Manuals

We have manuals for many of the meters that are no longer manufactured by us. If you don’t see the manual that your looking for on our website than please email us at the below address with the meters model number in the subject line. If you don’t have a model number than please attach a picture of the unit so that we can try to identify it.

If you see a manual and the link doesn’t work please email us by using the link below.

EMAIL US!